Updated New Contributors Guide (markdown)

New-Contributors-Guide.md

@@ -1,17 +1,6 @@
 Hello! Thank you for helping we really appreciate it! The infrastructure around large projects can be intimidating; for this repo here's what I had to learn to work smoothly:
 
-### Installation
-```
-git clone https://github.com/aspnet/AspNetCore.git
-cd AspNetCore
-git submodule update --init --recursive
-. .\activate.ps1
-.\restore.cmd
-```
-
-*([more details here](https://github.com/aspnet/AspNetCore/blob/master/docs/BuildFromSource.md))*
-
-*(if restore fails complaining about Java JDK not being found, run `eng\scripts\InstallJdk.ps1`)*
+[Instructions for getting up and running with this repository](https://github.com/dotnet/aspnetcore/blob/main/docs/BuildFromSource.md)
 
 ### Opening a Project
 
@@ -23,9 +12,9 @@ For small changes (typos, open bugs) just write and submit a PR. If there's a Gi
 
 For larger changes, please open a conversation about what you want to build, and we will help you work through potential issues before you start coding. 
 
-*([more details here](https://github.com/aspnet/AspNetCore/blob/master/CONTRIBUTING.md))*
+*([more details here](https://github.com/aspnet/AspNetCore/blob/main/CONTRIBUTING.md))*
 
-*([specific code patterns here](https://github.com/aspnet/AspNetCore/wiki/Engineering-guidelines))*
+*([specific code patterns here](https://github.com/dotnet/aspnetcore/wiki/Engineering-guidelines))*
 
 ### If Unit Tests Won't Run
 
@@ -35,7 +24,7 @@ There's dlls locked by a zombie process. Use Task Manager (or Process Explorer)
 
 Close VS, from the repo home re-run:
 
-```
+```bash
 . .\activate.ps1
 .\restore.cmd
 ```
@@ -43,7 +32,7 @@ Close VS, from the repo home re-run:
 
 If this doesn't work, first commit anything you want to keep, then
 
-```
+```bash
 git clean -xdf -e .dotnet
 . .\activate.ps1
 .\build.cmd /t:Noop -norestore
@@ -53,4 +42,4 @@ git clean -xdf -e .dotnet
 
 Probably need to regen refs. Navigate to your solution directory and run
 
-```dotnet msbuild /t:GenerateReferenceSource```
+`dotnet msbuild /t:GenerateReferenceSource`