docs($compile): improve docs

src/ng/compile.js

@@ -569,9 +569,9 @@ function $CompileProvider($provide) {
 
 
     /**
-     * Once the directives have been collected their compile functions is executed. This method
+     * Once the directives have been collected, their compile functions are executed. This method
      * is responsible for inlining directive templates as well as terminating the application
-     * of the directives if the terminal directive has been reached..
+     * of the directives if the terminal directive has been reached.
      *
      * @param {Array} directives Array of collected directives to execute their compile function.
      *        this needs to be pre-sorted by priority order.