Update documentation and links

Commit migrated from d67f938499

docs/coreclr/glossary.md

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+.NET Core Glossary
+===
+
+This glossary defines terms, both common and more niche, that are important to understand when reading .NET Core documents and source code. They are also often used by .NET Core team members and other contributers when conversing on GitHub (issues, PRs), on twitter and other sites.
+
+As much as possible, we should link to the most authoritative and recent source of information for a term. That approach should be the most helpful for people who want to learn more about a topic.
+
 * COR: [Common Object Runtime](http://www.danielmoth.com/Blog/mscorlibdll.aspx). The name of .NET before it was named .NET.
 * DAC: Data Access Component. An abstraction layer over the internal structures in the runtime.
 * EE: Execution Engine. 

docs/coreclr/intro-to-clr.md

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 Introduction to the Common Language Runtime (CLR)
 ===
-By Vance Morrison (@vancem) - 2007
+By Vance Morrison ([@vancem](https://github.com/vancem)) - 2007
 
 What is the Common Language Runtime (CLR)? To put it succinctly: 
 

docs/coreclr/mscorlib.md

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 Mscorlib and Calling Into the Runtime
 ===
-Author: Brian Grunkemeyer (@briangru) - 2006
+Author: Brian Grunkemeyer ([@briangru](https://github.com/briangru)) - 2006
 
 # Introduction