Additional HTML tweak

I removed the closing slashes from 2 input tags.
Inputs are void tags so they don't need the closing slash.

Author: Daniel Arthur Gallagher

index.html

@@ -22,7 +22,7 @@ <h2>A javascript regular expression editor</h2>
     <div id="main">
       <div id="expression">
         <h2>Regular Expression:</h2>
-        /<input name="expression" />/<input name="option" />
+        /<input name="expression">/<input name="option">
       </div>
 
       <div id="test_strings">