Merge pull request #17363 from jmarolf/bugfix/remove-mavasani-from-vsix-manifests

The publisher listed for our samples should not be mavasani

src/Samples/CSharp/Analyzers/CSharpAnalyzers/CSharpAnalyzers.Vsix/source.extension.vsixmanifest

 <?xml version="1.0" encoding="utf-8"?>
 <PackageManifest Version="2.0.0" xmlns="http://schemas.microsoft.com/developer/vsx-schema/2011" xmlns:d="http://schemas.microsoft.com/developer/vsx-schema-design/2011">
   <Metadata>
-    <Identity Id="CSharpAnalyzers.Vsix..ebf116a9-1298-4bbd-94ba-43268661a220" Version="1.0" Language="en-US" Publisher="mavasani"/>
+    <Identity Id="CSharpAnalyzers.Vsix..ebf116a9-1298-4bbd-94ba-43268661a220" Version="1.0" Language="en-US" Publisher="Microsoft"/>
     <DisplayName>CSharpAnalyzers.Vsix</DisplayName>
     <Description xml:space="preserve">This is a sample diagnostic extension for the .NET Compiler Platform ("Roslyn").</Description>
   </Metadata>

src/Samples/VisualBasic/Analyzers/BasicAnalyzers/BasicAnalyzers.Vsix/source.extension.vsixmanifest

 <?xml version="1.0" encoding="utf-8"?>
 <PackageManifest Version="2.0.0" xmlns="http://schemas.microsoft.com/developer/vsx-schema/2011" xmlns:d="http://schemas.microsoft.com/developer/vsx-schema-design/2011">
   <Metadata>
-    <Identity Id="BasicAnalyzers.Vsix..8f9b3bbb-1431-4f57-98bf-f387a0e68808" Version="1.0" Language="en-US" Publisher="mavasani"/>
+    <Identity Id="BasicAnalyzers.Vsix..8f9b3bbb-1431-4f57-98bf-f387a0e68808" Version="1.0" Language="en-US" Publisher="Microsoft"/>
     <DisplayName>BasicAnalyzers.Vsix</DisplayName>
     <Description xml:space="preserve">This is a sample diagnostic extension for the .NET Compiler Platform ("Roslyn").</Description>
   </Metadata>