docs(all): convert <pre>/</pre> snippets to GFM snippets

1 files changed, 15 insertions, 10 deletions

diff --git a/docs/content/tutorial/step_09.ngdoc b/docs/content/tutorial/step_09.ngdoc
index 8d23af3e..0e32001d 100644
--- a/docs/content/tutorial/step_09.ngdoc
+++ b/docs/content/tutorial/step_09.ngdoc
@@ -26,13 +26,14 @@ In order to create a new filter, you are going to create a `phonecatFilters` mod
 your custom filter with this module:
 
 __`app/js/filters.js`:__
-<pre>
+
+```js
 angular.module('phonecatFilters', []).filter('checkmark', function() {
   return function(input) {
     return input ? '\u2713' : '\u2718';
   };
 });
-</pre>
+```
 
 The name of our filter is "checkmark". The `input` evaluates to either `true` or `false`, and we
 return one of the two unicode characters we have chosen to represent true (`\u2713` -> ✓) or false (`\u2718` -> ✘).
@@ -41,11 +42,12 @@ Now that our filter is ready, we need to register the `phonecatFilters` module a
 our main `phonecat` module.
 
 __`app/js/app.js`:__
-<pre>
+
+```js
 ...
 angular.module('phonecatApp', ['phonecatFilters']).
 ...
-</pre>
+```
 
 
 ## Template
@@ -54,12 +56,13 @@ Since the filter code lives in the `app/js/filters.js` file, we need to include
 layout template.
 
 __`app/index.html`:__
-<pre>
+
+```html
 ...
  <script src="js/controllers.js"></script>
  <script src="js/filters.js"></script>
 ...
-</pre>
+```
 
 The syntax for using filters in Angular templates is as follows:
 
@@ -70,7 +73,8 @@ Let's employ the filter in the phone details template:
 
 
 __`app/partials/phone-detail.html`:__
-<pre>
+
+```html
 ...
     <dl>
       <dt>Infrared</dt>
@@ -79,7 +83,7 @@ __`app/partials/phone-detail.html`:__
       <dd>{{phone.connectivity.gps | checkmark}}</dd>
     </dl>
 ...
-</pre>
+```
 
 
 ## Test
@@ -87,7 +91,8 @@ __`app/partials/phone-detail.html`:__
 Filters, like any other component, should be tested and these tests are very easy to write.
 
 __`test/unit/filtersSpec.js`:__
-<pre>
+
+```js
 describe('filter', function() {
 
   beforeEach(module('phonecatFilters'));
@@ -101,7 +106,7 @@ describe('filter', function() {
     }));
   });
 });
-</pre>
+```
 
 We must call `beforeEach(module('phonecatFilters'))` before any of
 our filter tests execute. This call loads our `phonecatFilters` module into the injector