Add link to related console-docs GH repository (#784)

The console-docs repository is very related to this one. I feel it should be linked somewhere prominently in this one.
[skip ci]

README.md

@@ -1,10 +1,14 @@
-Welcome\! This repository contains the source code for:
+# Welcome\! 
+#### This repository contains the source code for:
 
   - Windows Terminal
   - The Windows console host (`conhost.exe`)
   - Components shared between the two projects
   - [ColorTool](https://github.com/Microsoft/Terminal/tree/master/src/tools/ColorTool)
   - [Sample projects](https://github.com/Microsoft/Terminal/tree/master/samples) that show how to consume the Windows Console APIs
+  
+#### Other related repositories include:
+  - [Console API Documentation](https://github.com/MicrosoftDocs/Console-Docs/issues)
 
 ### Build Status
 
@@ -161,4 +165,4 @@ For more information see the [Code of Conduct FAQ][conduct-FAQ] or contact [open
 
 [conduct-code]: https://opensource.microsoft.com/codeofconduct/
 [conduct-FAQ]: https://opensource.microsoft.com/codeofconduct/faq/
-[conduct-email]: mailto:opencode@microsoft.com
+[conduct-email]: mailto:opencode@microsoft.com