[clang-tools-extra] [Docs][clang-tools-extra] Convert maintainers list to .rst format (PR #165171)

[Baranov Victor via cfe-commits]

================
@@ -2,9 +2,13 @@
 Clang Tools Extra Maintainers
 =============================
 
-This file is a list of the maintainers
-(https://llvm.org/docs/DeveloperPolicy.html#maintainers) for clang-tools-extra.
+This file is a list of the 
+`maintainers <https://llvm.org/docs/DeveloperPolicy.html#maintainers>`_
+for clang-tools-extra.
----------------
vbvictor wrote:

"Maintainers of XXX directory" don't sound honorable/noble enough to me, and I think this file should be written with sense of honor. 

What I consider honorable is "project" or "extra tools built using Clang’s tooling APIs"(copied text from cite)

https://github.com/llvm/llvm-project/pull/165171