src/dotnet/tools/Directory.Build.props: Removed trailing whitespace, added final newline

Author: NightOwl888

src/dotnet/tools/Directory.Build.props

@@ -22,7 +22,7 @@
   <Import Project="$([MSBuild]::GetPathOfFileAbove('Directory.Build.props', '$(MSBuildThisFileDirectory)../'))" />
 
   <PropertyGroup>
-    <!-- According to the docs (https://docs.microsoft.com/en-us/cpp/build/reference/common-macros-for-build-commands-and-properties?view=vs-2019), the 
+    <!-- According to the docs (https://docs.microsoft.com/en-us/cpp/build/reference/common-macros-for-build-commands-and-properties?view=vs-2019), the
       SolutionDir is only available when running in the IDE, so we patch to ensure it also works when using dotnet.exe -->
     <SolutionDir>$(MSBuildThisFileDirectory)../../../</SolutionDir>
   </PropertyGroup>
@@ -32,4 +32,4 @@
       If the project is further nested from the repo root, override this value in the csproj. -->
     <AssemblyOriginatorKeyFile>$(SolutionDir)Lucene.Net.snk</AssemblyOriginatorKeyFile>
   </PropertyGroup>
-</Project>
+</Project>