Update ownership of .NET tools documentation (#48882)

Author: meaghanlewis

.github/CODEOWNERS

@@ -120,7 +120,7 @@
 # Testing
 /docs/core/testing/ @IEvangelist @dotnet/docs
 # Tools
-/docs/core/tools/ @adegeo @dotnet/docs
+/docs/core/tools/ @meaghanlewis @dotnet/docs
 # Tutorials
 /docs/core/tutorials/ @meaghanlewis @dotnet/docs
 # What's new

docfx.json

@@ -365,7 +365,7 @@
                 "docs/core/project-sdk/**/**.md": "gewarren",
                 "docs/core/runtime-config/**/**.md": "gewarren",
                 "docs/core/testing/**/**.md": "IEvangelist",
-                "docs/core/tools/**/**.md": "adegeo",
+                "docs/core/tools/**/**.md": "meaghanlewis",
                 "docs/core/tutorials/**/**.md": "meaghanlewis",
                 "docs/core/versions/**/**.md": "billwagner",
                 "docs/core/whats-new/**/**.md": "gewarren",
@@ -458,7 +458,7 @@
                 "docs/core/project-sdk/**/**.md": "gewarren",
                 "docs/core/runtime-config/**/**.md": "gewarren",
                 "docs/core/testing/**/**.md": "dapine",
-                "docs/core/tools/**/**.md": "adegeo",
+                "docs/core/tools/**/**.md": "mosagie",
                 "docs/core/tutorials/**/**.md": "mosagie",
                 "docs/core/versions/**/**.md": "wiwagn",
                 "docs/core/whats-new/**/**.md": "gewarren",