docs(*): fix links to Dart API entries (#2185)

* docs(*): fix links to Dart API entries

* post-review updates

Author: chalin

public/docs/dart/latest/guide/dependency-injection.jade

@@ -34,6 +34,12 @@ block real-logger
       A real implementation would probably use the
       [logging package](https://pub.dartlang.org/packages/logging).
 
+block provider-shorthand
+  :marked
+    This is actually a shorthand expression for a provider registration
+    that creates a new instance of the
+    [Provider](../api/angular2.core/Provider-class.html) class:
+
 block provider-ctor-args
   - var _secondParam = 'named parameter, such as <code>useClass</code>' 
   :marked

public/docs/dart/latest/guide/forms.jade

@@ -518,7 +518,7 @@ figure.image-display
     Recall from the previous section that `ngControl` registered this input box with the
     `NgForm` directive as "name".
 
-    We didn't add the **[`NgForm`](../api/common/index/NgForm-directive.html) directive*
+    We didn't add the [NgForm](../api/angular2.common/NgForm-class.html) directive
     explicitly. Angular added it surreptitiously, wrapping it around the `<form>` element.
 
     The `NgForm` directive  supplements the `<form>` element with additional features.

public/docs/ts/_cache/guide/dependency-injection.jade

@@ -527,15 +527,10 @@ code-example(format="nocode").
 
 +makeExample('dependency-injection/ts/app/providers.component.ts','providers-1')
 
-:marked
-  This is actually a short-hand expression for a provider registration
-  <span if-docs="ts">
+block provider-shorthand
+  :marked
+    This is actually a shorthand expression for a provider registration
     using a _provider_ object literal with two properties:
-  </span>
-  <span if-docs="dart">
-    that creates a new instance of the
-    [Provider](../api/core/index/Provider-class.html) class:
-  </span>
 
 +makeExample('dependency-injection/ts/app/providers.component.ts','providers-3')
 

public/docs/ts/_cache/guide/template-syntax.jade

@@ -492,8 +492,6 @@ table
     [viewChild](../api/core/index/ViewChild-var.html) and
     [contentChild](../api/core/index/ContentChild-var.html).
 
-// TODO (global): once we have api docs everywhere, change /docs/ts/latest/ to ../
-
 :marked
   ### Binding target
   An element property between enclosing square brackets identifies the target property. The target property in the following code is the image element’s `src` property.

public/docs/ts/latest/guide/dependency-injection.jade

@@ -527,15 +527,10 @@ code-example(format="nocode").
 
 +makeExample('dependency-injection/ts/app/providers.component.ts','providers-1')
 
-:marked
-  This is actually a short-hand expression for a provider registration
-  <span if-docs="ts">
+block provider-shorthand
+  :marked
+    This is actually a shorthand expression for a provider registration
     using a _provider_ object literal with two properties:
-  </span>
-  <span if-docs="dart">
-    that creates a new instance of the
-    [Provider](../api/core/index/Provider-class.html) class:
-  </span>
 
 +makeExample('dependency-injection/ts/app/providers.component.ts','providers-3')
 

public/docs/ts/latest/guide/template-syntax.jade

@@ -492,8 +492,6 @@ table
     [viewChild](../api/core/index/ViewChild-var.html) and
     [contentChild](../api/core/index/ContentChild-var.html).
 
-// TODO (global): once we have api docs everywhere, change /docs/ts/latest/ to ../
-
 :marked
   ### Binding target
   An element property between enclosing square brackets identifies the target property. The target property in the following code is the image element’s `src` property.