docs(guide/Conceptual Overview): remove text from in-page anchor tags

The in-page anchor tags that serve as bookmarks for information about views and models have
visible text content that unintentionally makes them seem like clickable links navigating to
other parts of the page or to entirely different pages.

Closes #11450

Author: kevhuang

docs/content/guide/concepts.ngdoc

@@ -57,7 +57,7 @@ Try out the Live Preview above, and then let's walk through the example and desc
 This looks like normal HTML, with some new markup. In Angular, a file like this is called a
 <a name="template">{@link templates template}</a>. When Angular starts your application, it parses and
 processes this new markup from the template using the <a name="compiler">{@link compiler compiler}</a>.
-The loaded, transformed and rendered DOM is then called the <a name="view">view</a>.
+The loaded, transformed and rendered DOM is then called the <a name="view"></a>*view*.
 
 The first kind of new markup are the <a name="directive">{@link directive directives}</a>.
 They apply special behavior to attributes or elements in the HTML. In the example above we use the
@@ -79,7 +79,7 @@ An <a name="expression">{@link expression expression}</a> in a template is a Jav
 to read and write variables. Note that those variables are not global variables.
 Just like variables in a JavaScript function live in a scope,
 Angular provides a <a name="scope">{@link scope scope}</a> for the variables accessible to expressions.
-The values that are stored in variables on the scope are referred to as the <a name="model">model</a>
+The values that are stored in variables on the scope are referred to as the <a name="model"></a>*model*
 in the rest of the documentation.
 Applied to the example above, the markup directs Angular to "take the data we got from the input widgets
 and multiply them together".