docs(guide/overview): Refactor overview and mvc docs

Before, there we multiple overview docs:
- guide/overview
- guide/introduction
- guide/dev_guide.mvc
- guide/dev_guide.mvc.understanding_model
- guide/dev_guide.mvc.understanding_view
- guide/concepts

Now we have:
- guide/introduction: High level description of Angular with the key benefits but without code or any concrete concepts
- guide/concepts: explains all important concepts with a simple example and contains deep links to the other parts of the guide.

 All the old information was moved into existing documents or deleted when they were duplicates.

1 files changed, 1 insertions, 1 deletions

diff --git a/docs/content/cookbook/helloworld.ngdoc b/docs/content/cookbook/helloworld.ngdoc
index 8b693a63..a24f959a 100644
--- a/docs/content/cookbook/helloworld.ngdoc
+++ b/docs/content/cookbook/helloworld.ngdoc
@@ -34,6 +34,6 @@ Take a look through the source and note:
 * There is no need for listener registration and event firing on change events.
 * The implicit presence of the `name` variable which is in the root {@link api/ng.$rootScope.Scope scope}.
 * The double curly brace `{{markup}}`, which binds the name variable to the greeting text.
-* The concept of {@link guide/dev_guide.templates.databinding data binding}, which reflects any
+* The concept of {@link guide/databinding data binding}, which reflects any
 changes to the
   input field in the greeting text.