ignore Properties/launchSettings.json even if Properties is a subfolder

Author: ChuckLu

VisualStudio.gitignore

@@ -47,7 +47,7 @@ dlldata.c
 project.lock.json
 project.fragment.lock.json
 artifacts/
-Properties/launchSettings.json
+**/Properties/launchSettings.json
 
 *_i.c
 *_p.c