change size to 248 to avoid aliasing (#207)

* Update index.html

* Update index.html

Author: sirdarckcat

docs/index.html

@@ -68,7 +68,7 @@
                         requests and responses as they happen
                         without the need of a proxy.
                     </p>
-                    <p><a href="https://chrome.google.com/webstore/detail/tamper-chrome/mdemppnhjflbejfbnlddahjbpdbeejnn"><img src="./assets/images/cws.png" alt="Avaliable in the Chrome Web Store" width="206" /></a></p>
+                    <p><a href="https://chrome.google.com/webstore/detail/tamper-chrome/mdemppnhjflbejfbnlddahjbpdbeejnn"><img src="./assets/images/cws.png" alt="Avaliable in the Chrome Web Store" width="248" /></a></p>
                 </div>
                 <div>
                     <img src="./assets/images/banner.png" alt="banner">