Update footer.html

Author: TwperBody

_includes/footer.html

@@ -10,8 +10,8 @@
                     Copyright © {{ site.title }} {{ site.time | date: '%Y' }}
                     <br>
                     Powered by <a href="http://huangxuan.me">Hux Blog</a> |
-                    <iframe style="margin-left: 2px; margin-bottom:-5px;" frameborder="0" scrolling="0" width="50px"
-                        height="10px"
+                    <iframe style="margin-left: 2px; margin-bottom:-5px;" frameborder="0" scrolling="0" width="100px"
+                        height="20px"
                         src="https://ghbtns.com/github-btn.html?user=huxpro&repo=huxpro.github.io&type=star&count=true">
                     </iframe>
                 </p>