fix(themes/application): Invalid markup

Author: sorin-davidoi

app/templates/application.hbs

@@ -127,5 +127,5 @@
 </footer>
 
 <a href='https://github.com/rust-lang/crates.io' class='fork-me'>
-  <img src='/assets/forkme.png'/ alt="Fork me on GitHub">
+  <img src='/assets/forkme.png' alt="Fork me on GitHub" />
 </a>