New attempt to filter out off-project libraries

***NO_CI***

Author: josesimoes

Diff for: docfx.json

@@ -29,8 +29,8 @@
             "**/nanoFramework.Graphics.Core.UnitTests.System.Drawing/**",
             "**/nanoFramework.Protobuf.Test.Domain/**",
             "**/nanoFramework.Protobuf.Test.Net/**",
-            "**/Polly*/**",
-            "**/PropertyChanged*/**",
+            "**/Polly/**",
+            "**/PropertyChanged/**",
             "**/TestAppv5*/**",
             "**/TestMqtt*/**"
           ]