docs(guide/directives): improve links to isolate scope docs

Link "isolate scope" to "Directive Definition object" section

Closes angular#7484

Author: malko

docs/content/guide/directive.ngdoc

@@ -510,8 +510,8 @@ that you explicitly pass in.
 
 <div class="alert alert-warning">
 **Note:** Normally, a scope prototypically inherits from its parent. An isolated scope does not.
-See the {@link guide/directive#isolating-the-scope-of-a-directive
-"Isolating the Scope of a Directive"} section for more information about isolate scopes.
+See the {@link api/ng/service/$compile#directive-definition-object
+"Directive Definition Object - scope"} section for more information about isolate scopes.
 </div>
 
 <div class="alert alert-success">