Added links back to changelog

CHANGELOG.md

@@ -13,22 +13,22 @@ Updated PECL release packages. Here is the list of updates:
 - Added support for Ubuntu 18.04 (requires version 17.2 or higher of the [ODBC driver](https://docs.microsoft.com/en-us/sql/connect/odbc/linux-mac/installing-the-microsoft-odbc-driver-for-sql-server?view=sql-server-2017))
 
 ### Fixed
-- Issue #577 - Idle Connection Resiliency doesn't work with Column Encryption enabled connections (fixed in MS ODBC Driver 17.1)
-- Issue #678 - Idle Connection Resiliency doesn't work with Connection Pooling (fixed in MS ODBC Driver 17.1)
-- Issue #699 - Binding output parameters fails when the query in the stored procedure returns no data. The test case has been added to the test lab.
-- Issue #705 - Always Encrypted - Retrieving a negative decimal value (edge case) as output parameter causes truncation
-- Issue #706 - Always Encrypted - Cannot insert double with precision and scale (38, 38)
-- Issue #707 - Always Encrypted - Fetching decimals / numerics as output parameters bound to PDO::PARAM_BOOL or PDO::PARAM_INT returns floats, not integers 
-- Issue #735 - Extended the buffer size for PDO::lastInsertId so that data types other than integers can be supported
-- Pull Request #759 - Removed the limitation of binding a binary as inout param as PDO::PARAM_STR with SQLSRV_ENCODING_BINARY
-- Pull Request #775 - Fixed the truncation problem for output params with SQL types specified as SQLSRV_SQLTYPE_DECIMAL or SQLSRV_SQLTYPE_NUMERIC
+- Issue [#577](https://github.com/Microsoft/msphpsql/issues/577) - Idle Connection Resiliency doesn't work with Column Encryption enabled connections (fixed in MS ODBC Driver 17.1)
+- Issue [#678](https://github.com/Microsoft/msphpsql/issues/678) - Idle Connection Resiliency doesn't work with Connection Pooling (fixed in MS ODBC Driver 17.1)
+- Issue [#699](https://github.com/Microsoft/msphpsql/issues/699) - Binding output parameters fails when the query in the stored procedure returns no data. The test case has been added to the test lab.
+- Issue [#705](https://github.com/Microsoft/msphpsql/issues/705) - Always Encrypted - Retrieving a negative decimal value (edge case) as output parameter causes truncation
+- Issue [#706](https://github.com/Microsoft/msphpsql/issues/706) - Always Encrypted - Cannot insert double with precision and scale (38, 38)
+- Issue [#707](https://github.com/Microsoft/msphpsql/issues/707) - Always Encrypted - Fetching decimals / numerics as output parameters bound to PDO::PARAM_BOOL or PDO::PARAM_INT returns floats, not integers 
+- Issue [#735](https://github.com/Microsoft/msphpsql/issues/735) - Extended the buffer size for PDO::lastInsertId so that data types other than integers can be supported
+- Pull Request [#759](https://github.com/Microsoft/msphpsql/pull/759) - Removed the limitation of binding a binary as inout param as PDO::PARAM_STR with SQLSRV_ENCODING_BINARY
+- Pull Request [#775](https://github.com/Microsoft/msphpsql/pull/775) - Fixed the truncation problem for output params with SQL types specified as SQLSRV_SQLTYPE_DECIMAL or SQLSRV_SQLTYPE_NUMERIC
 
 ### Limitations
 - No support for inout / output params when using sql_variant type
 - In Linux and macOS, setlocale() only takes effect if it is invoked before the first connection. Attempting to set the locale after connecting will not work
 - Always Encrypted requires [MS ODBC Driver 17+](https://docs.microsoft.com/en-us/sql/connect/odbc/linux-mac/installing-the-microsoft-odbc-driver-for-sql-server?view=sql-server-2017)
   - Only Windows Certificate Store and Azure Key Vault are supported. Custom Keystores are not yet supported
-  - Issue #716 - With Always Encrypted enabled, named parameters in subqueries are not supported
+  - Issue [#716](https://github.com/Microsoft/msphpsql/issues/716) - With Always Encrypted enabled, named parameters in subqueries are not supported
   - [Always Encrypted limitations](https://docs.microsoft.com/en-us/sql/connect/php/using-always-encrypted-php-drivers?view=sql-server-2017#limitations-of-the-php-drivers-when-using-always-encrypted)
 
 ### Known Issues
@@ -36,7 +36,7 @@ Updated PECL release packages. Here is the list of updates:
 - When pooling is enabled in Linux or macOS
   - unixODBC <= 2.3.4 (Linux and macOS) might not return proper diagnostic information, such as error messages, warnings and informative messages
   - due to this unixODBC bug, fetch large data (such as xml, binary) as streams as a workaround. See the examples [here](https://github.com/Microsoft/msphpsql/wiki/Features#pooling)
-- With ColumnEncryption enabled, calling stored procedures with XML parameters does not work (Issue #674)
+- With ColumnEncryption enabled, calling stored procedures with XML parameters does not work (Issue [#674](https://github.com/Microsoft/msphpsql/issues/674))
 
 ## 5.2.1-preview - 2018-06-01
 Updated PECL release packages. Here is the list of updates: