docs: added dot before angular-cli.json (#3324)

small evolution from angular CLI config file

Author: merlosy

public/docs/ts/latest/cli-quickstart.jade

@@ -302,7 +302,7 @@ table(width="100%")
         `Node.js` creates this folder and puts all third party modules listed in 
         `package.json` inside of it.
   tr
-    td <code>angular-cli.json</code>
+    td <code>.angular-cli.json</code>
     td
       :marked
         Configuration for Angular CLI.