Update 01_templates.md

Author: matsko

modules/angular2/docs/core/01_templates.md

@@ -33,10 +33,12 @@ detail in following sections.
  <tr>
   <th>Text Interpolation</th>
   <td>
-`<div>{{exp}}</div>`
+```html
+<div>{{exp}}</div>
+```
 
 Example:
-```
+```html
 <div>
  Hello {{name}}!
  <br>
@@ -48,7 +50,7 @@ Example:
 `<div [text|index]=exp>`
 
 Example:
-```
+```html
 <div
  [text|0]=" 'Hello' + stringify(name) + '!' "
  [text|2]=" 'Goodbye' + stringify(name) + '!' ">
@@ -60,18 +62,26 @@ Example:
  <tr>
   <th>Property Interpolation</th>
   <td>
-`<div name="{{exp}}">`
+```html
+<div name="{{exp}}">
+```
 
 Example:
 
-`<div class="{{selected}}">`
+```html
+<div class="{{selected}}">`
+```
   </td>
   <td>
-`<div [name]="stringify(exp)">`
+```html
+<div [name]="stringify(exp)">
+```
 
 Example:
 
-`<div [class]="stringify(selected)">`
+```html
+<div [class]="stringify(selected)">
+```
   </td>
  </tr>
  <tr>