Merge pull request airbnb#341 from billabong/spacing_format_fix

Fixed spacing on code block under Comments.

Author: goatslacker

README.md

@@ -1242,7 +1242,7 @@
         this.total = 0;
       }
     }
-  ```
+    ```
 
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es5/README.md

@@ -757,7 +757,7 @@
 
       return this;
     }
-  ```
+    ```
 
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