Minor edits to README

Author: matteosuppo

README.md

@@ -32,10 +32,10 @@ It's a filter, you use it in your html like this:
 
     ```<div ng-bind-html="oldText|diff:newText"></div>```
 
-    This will show the diff between ```oldText``` and ```newText```
+This will show the diff between ```oldText``` and ```newText```
 
-    Note that the filter returns html with <ins> and <del> tags, so in order to
-    display it you have to use ng-bind-html.
+Note that the filter returns html with '''<ins>''' and '''<del>''' tags, so in order to
+display it you have to use ng-bind-html.
 
 Here's a demo, that's worth more than a thousand words: