Add maintainers for clang-doc and clangd

Author: AaronBallman

clang-tools-extra/Maintainers.txt

@@ -35,14 +35,23 @@ clang-query
 
 clang-doc
 ---------
-| Julie Hockett
-| [email protected] (email)
+| Paul Kirth
+| [email protected] (email), ilovepi (GitHub), ilovepi (Discourse)
+
+| Peter Chou
+| [email protected] (email), PeterChou1 (GitHub), PeterChou1 (Discourse), .peterchou (Discord)
 
 
 clangd
 ------
-| Sam McCall
-| [email protected] (email), sam-mccall (GitHub), sam-mccall (Discourse), sam-mccall (Discord)
+| Nathan Ridge
+| [email protected] (email), HighCommander4 (GitHub), HighCommander4 (Discourse), nridge (Discord)
+
+| Chris Bieneman
+| [email protected] (email), llvm-beanz (GitHub), beanz (Discord), beanz (Discourse)
+
+| Kadir Çetinkaya
+| [email protected] (email), kadircet (GitHub) kadircet (Discourse), kadircet (Discord)
 
 
 Inactive Maintainers
@@ -54,3 +63,5 @@ help with the success of the project!
 Inactive component maintainers
 ------------------------------
 | Nathan James ([email protected]) -- clang-tidy
+| Julie Hockett ([email protected]) -- clang-doc
+| Sam McCall ([email protected] (email), sam-mccall (GitHub, Discourse, Discord)) -- clangd