Fixing typo in dirs.proj.

Author: stgates

Release/tests/functional/websockets/client/dirs.proj

@@ -10,7 +10,7 @@
   <ItemGroup Condition="'$(OsVersion)|$(DevToolsVersion)'=='6.3|120'">
       <ProjectFile Include="VS12.winrt\websocketsclient120_test.winrt.vcxproj" />
   </ItemGroup>
-  -- >
+  -->
 
   <ItemGroup Condition="'$(DevToolsVersion)'=='140'">
     <ProjectFile Include="vs14\websocketsclient140_test.vcxproj" />