Update README

README.md

@@ -27,7 +27,7 @@ To contribute a docset, follow the steps below. If you get stuck at any point or
   ```
   * Copy your docset archive
     * Note: don't worry about this repo's size getting huge. As soon as your docset gets distributed to my CDN, it will get removed from the repo automatically. If your docset exceeds GitHub's file limit of 100 MB, open an issue and we'll figure out a different way to submit your docset
-  * Include a `icon.png` and `icon@2x.png` with sizes `16x16` and `32x32` or simply delete the sample icon if you don't want an icon at all
+  * Include an `icon.png` and `icon@2x.png` with sizes `16x16` and `32x32` or simply delete the sample icon if you don't want an icon at all
   * Edit the docset.json file. Make sure to follow the same naming rules as the sample (i.e. your docset name should be the same as the archive name, but replace whitespaces with underscores)
   * Edit the README.md
 * Submit a pull request