Fix casing of OfficialBuildRID

Working around https://github.com/Microsoft/msbuild/issues/1751


Commit migrated from https://github.com/dotnet/core-setup/commit/6341fc68f53e6a96c4b0f3107bbc4782867d995b

src/installer/pkg/projects/netcoreappRIDs.props

@@ -16,9 +16,9 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <OfficialBuildRid Include="debian.8-armel">
+    <OfficialBuildRID Include="debian.8-armel">
       <Platform>armel</Platform>
-    </OfficialBuildRid>
+    </OfficialBuildRID>
     <OfficialBuildRID Include="linux-x64" />
     <OfficialBuildRID Include="osx-x64" />
     <OfficialBuildRID Include="win-x86">
@@ -34,9 +34,9 @@
     <OfficialBuildRID Include="linux-arm">
       <Platform>arm</Platform>
     </OfficialBuildRID>
-    <OfficialBuildRid Include="tizen.4.0.0-armel">
+    <OfficialBuildRID Include="tizen.4.0.0-armel">
       <Platform>armel</Platform>
-    </OfficialBuildRid>
+    </OfficialBuildRID>
     </ItemGroup>
     
 </Project>
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