Fix link in release notes index

BuildTools · BuildTools · commit e94d3034eb43 · 2017-01-11T11:32:05.000-08:00
diff --git a/docs/Release-Notes/Index.md b/docs/Release-Notes/Index.md
@@ -38,7 +38,7 @@ ms.reviewer:
 
 [NuGet 3.5 RC](../release-notes/nuget-3.5-rc.md)
 
-[NuGet 3.5 Beta2](../release-notes/nuget-3.5-beta2)
+[NuGet 3.5 Beta2](../release-notes/nuget-3.5-beta2.md)
 
 [NuGet 3.4.4](../release-notes/nuget-3.4.4.md)
 
