Address review comments

Addres review comments done by Hanno

CONTRIBUTING.md

@@ -7,12 +7,12 @@ We gratefully accept bug reports and contributions from the community. There are
 
 Contributor License Agreement (CLA)
 -----------------------------------
-- All contributions, whether large or small require a Contributor's License Agreement (CLA) to be accepted. This is because source code can possibly fall under copyright law and we need your consent to share in the ownership of the copyright.
-- To accept the Contributor’s License Agreement (CLA), individual contributors can do this by creating an mbed account and [accepting the online agreement here with a click through](https://developer.mbed.org/contributor_agreement/). Alternatively, for contributions from corporations, or those that do not wish to create an mbed account, a slightly different agreement can be found [here](https://www.mbed.com/en/about-mbed/contributor-license-agreements/). This agreement should be signed and returned to ARM as described in the instructions given.
+- All contributions, whether large or small, require a Contributor's License Agreement (CLA) to be accepted. This is because source code can possibly fall under copyright law and we need your consent to share in the ownership of the copyright.
+- To accept the Contributor’s License Agreement (CLA), individual contributors can do this by creating an Mbed account and [accepting the online agreement here with a click through](https://developer.mbed.org/contributor_agreement/). Alternatively, for contributions from corporations, or those that do not wish to create an Mbed account, a slightly different agreement can be found [here](https://www.mbed.com/en/about-mbed/contributor-license-agreements/). This agreement should be signed and returned to Arm as described in the instructions given.
 
 Coding Standards
 ----------------
-- We would ask that contributions conform to [our coding standards](https://tls.mbed.org/kb/development/mbedtls-coding-standards), and that contributions are fully tested before submission.
+- We would ask that contributions conform to [our coding standards](https://tls.mbed.org/kb/development/mbedtls-coding-standards), and that contributions are fully tested before submission, as mentioned in the [Tests](#tests) and [Continuous Integration](#continuous-integration-tests) sections.
 - The code should be written in a clean and readable style.
 - The code should be written in a portable generic way, that will benefit the whole community, and not only your own needs.
 - The code should be secure, and will be reviewed from a security point of view as well.
@@ -20,15 +20,15 @@ Coding Standards
 Making a Contribution
 ---------------------
 1. [Check for open issues](https://github.com/ARMmbed/mbedtls/issues) or [start a discussion](https://tls.mbed.org/discussions) around a feature idea or a bug.
-1. Fork the [mbed TLS repository on GitHub](https://github.com/ARMmbed/mbedtls) to start making your changes. As a general rule, you should use the ["development" branch](https://github.com/ARMmbed/mbedtls/tree/development) as a basis.
+1. Fork the [Mbed TLS repository on GitHub](https://github.com/ARMmbed/mbedtls) to start making your changes. As a general rule, you should use the ["development" branch](https://github.com/ARMmbed/mbedtls/tree/development) as a basis.
 1. Write a test which shows that the bug was fixed or that the feature works as expected.
-1. Send a pull request (PR) and work with us until it gets merged and published. Contributions may need some modifications, so  a few rounds of review and fixing may be necessary. We will include your name in the ChangeLog :)
+1. Send a pull request (PR) and work with us until it gets merged and published. Contributions may need some modifications, so a few rounds of review and fixing may be necessary. We will include your name in the ChangeLog :)
 1. For quick merging, the contribution should be short, and concentrated on a single feature or topic. The larger the contribution is, the longer it would take to review it and merge it.
-1. mbed TLS is release with Apache license, and as such, all the added files should include the Apache license header.
+1. Mbed TLS is released under the Apache license, and as such, all the added files should include the Apache license header.
 
 Backports
 ---------
-mbed TLS maintains some legacy branches, which are released as LTS versions. mbed TLS should follow backwards compatibility rules, to fit with existing users. As such, backporting to these branches should be handled according to the following rules:
+Mbed TLS maintains some legacy branches, which are released as LTS versions. Mbed TLS should follow backwards compatibility rules, to fit with existing users. As such, backporting to these branches should be handled according to the following rules:
   
 1. If the contribution is a new feature or enhancement, no backporting is needed.
 1. Bug fixes should be backported to the legacy branches containing these bugs.
@@ -42,8 +42,8 @@ At the moment, the legacy branches are:
 
 Tests
 -----
-As mentioned, tests that show the correctness of the feature or bug fix should be added to the Pull Request, if no such tests exist.  
-mbed TLS includes an elaborate test suite in `tests/` that initially requires Perl to generate the tests files (e.g. `test_suite_mpi.c`). These files are generated from a `function file` (e.g. `suites/test_suite_mpi.function`) and a `data file` (e.g. `suites/test_suite_mpi.data`). The function file contains the test functions. The data file contains the test cases, specified as parameters that will be passed to the test function.
+As mentioned, tests that show the correctness of the feature or bug fix should be added to the pull request, if no such tests exist.  
+Mbed TLS includes an elaborate test suite in `tests/` that initially requires Perl to generate the tests files (e.g. `test_suite_mpi.c`). These files are generated from a `function file` (e.g. `suites/test_suite_mpi.function`) and a `data file` (e.g. `suites/test_suite_mpi.data`). The function file contains the test functions. The data file contains the test cases, specified as parameters that will be passed to the test function.
 
 Sample applications, if needed, should be modified as well.
 
@@ -54,7 +54,7 @@ It is advised to enable the [githooks scripts](https://github.com/ARMmbed/mbedtl
 
 Documentation
 -------------
-mbed TLS should be well documented. If documentation is needed, speak out!
+Mbed TLS should be well documented. If documentation is needed, speak out!
 
 1. All interfaces should be documented through Doxygen. New APIs should introduce Doxygen documentation.
 1. Complex parts in the code should include comments.