Fix indentation

Author: gugavaro

src/Mono.Android/Mono.Android.csproj

@@ -388,9 +388,9 @@
       ApiCompatContractPath = "$(ApiCompatibilityDir)"
       TargetImplementationPath="$(OutputPath)"
       />
-      <Touch Files="$(IntermediateOutputPath)CheckApiCompatibility.stamp" AlwaysCreate="True" />
-      <ItemGroup>
-        <FileWrites Include="$(IntermediateOutputPath)CheckApiCompatibility.stamp" />
-      </ItemGroup>
+    <Touch Files="$(IntermediateOutputPath)CheckApiCompatibility.stamp" AlwaysCreate="True" />
+    <ItemGroup>
+      <FileWrites Include="$(IntermediateOutputPath)CheckApiCompatibility.stamp" />
+    </ItemGroup>
   </Target>
 </Project>