Update ownership of Buffers and Drawing (#34928)

docs/area-owners.md

@@ -48,7 +48,7 @@ Below table shows the combined area owners on this repository:
 | area-Tracing-mono | @lambdageek | |
 | area-Performance-mono | @SamMonoRT | |
 | **System namespaces** | | |
-| area-System.Buffers | @tannergooding | |
+| area-System.Buffers | @tannergooding @GrabYourPitchforks @pgovind | |
 | area-System.CodeDom | @buyaa-n @krwq | |
 | area-System.Collections | @eiriktsarpalis @layomia | </ul>Excluded:<ul><li>System.Array -> System.Runtime</li></ul> |
 | area-System.ComponentModel | @safern | |
@@ -63,7 +63,7 @@ Below table shows the combined area owners on this repository:
 | area-System.Diagnostics.Process | @adamsitnik @eiriktsarpalis | |
 | area-System.Diagnostics.Tracing | @noahfalk @tommcdon @tarekgh @Anipik | Packages:<ul><li>System.Diagnostics.DiagnosticSource</li><li>System.Diagnostics.PerformanceCounter - [@Anipik](https://github.com/Anipik)</li><li>System.Diagnostics.Tracing</li><li>System.Diagnostics.TraceSource - [@Anipik](https://github.com/Anipik)</li></ul><br/> |
 | area-System.DirectoryServices | @tquerec @josephisenhour | |
-| area-System.Drawing | @safern | |
+| area-System.Drawing | @safern @tannergooding | |
 | area-System.Dynamic.Runtime | @cston @333fred | Archived component - limited churn/contributions (see [#33170](https://github.com/dotnet/corefx/issues/33170)) |
 | area-System.Globalization | @safern @tarekgh @krwq | |
 | area-System.IO | @carlossanlop @jozkee | |