chore: Fastcoding Inc broken icon [ci skip] (vuejs#10638)

Author: Naartti

README.md

@@ -208,8 +208,8 @@ Funds donated via Patreon go directly to support Evan You's full-time work on Vu
         </a>
       </td>
       <td align="center" valign="middle">
-        <a href="https://fastcoding.jp/javascript/ " target="_blank">
-          <img width="148px" src="https://raw.githubusercontent.com/vuejs/vuejs.org/master/themes/vue/source/images/fastcoding_inc.svg">
+        <a href="https://fastcoding.jp/javascript/" target="_blank">
+          <img width="148px" src="https://raw.githubusercontent.com/vuejs/vuejs.org/master/themes/vue/source/images/fastcoding_inc.png">
         </a>
       </td>
     </tr><tr></tr>