update version.props whitespace

Author: WeihanLi

build/version.props

@@ -4,8 +4,8 @@
     <VersionMinor>0</VersionMinor>
     <VersionPatch>6</VersionPatch>
     <VersionRevision>1</VersionRevision>
-		<VersionPrefix Condition="'$(VersionRevision)'=='0' or '$(VersionRevision)'==''">$(VersionMajor).$(VersionMinor).$(VersionPatch)</VersionPrefix>
-		<VersionPrefix Condition="'$(VersionRevision)'!='0'">$(VersionMajor).$(VersionMinor).$(VersionPatch).$(VersionRevision)</VersionPrefix>
+    <VersionPrefix Condition="'$(VersionRevision)'=='0' or '$(VersionRevision)'==''">$(VersionMajor).$(VersionMinor).$(VersionPatch)</VersionPrefix>
+    <VersionPrefix Condition="'$(VersionRevision)'!='0'">$(VersionMajor).$(VersionMinor).$(VersionPatch).$(VersionRevision)</VersionPrefix>
     <VersionSuffix Condition="'$(Configuration)'=='DEBUG'">dev</VersionSuffix>
   </PropertyGroup>
 </Project>