Update doc/realworld.html

Fix syntax

doc/realworld.html

@@ -59,7 +59,7 @@
       <li><a href="http://qyapp.com">QiYun web app platform</a></li>
       <li><a href="http://ariya.ofilabs.com/2011/09/hybrid-webnative-desktop-codemirror.html">Qt+Webkit integration</a> (building a desktop CodeMirror app)</li>
       <li><a href="http://www.sketchpatch.net/labs/livecodelabIntro.html">sketchPatch Livecodelab</a></li>
-      <li><a href="http://www.skulpt.org/">Skulpt</a> (in-browser Python environment)</li.
+      <li><a href="http://www.skulpt.org/">Skulpt</a> (in-browser Python environment)</li>
       <li><a href="http://www.solidshops.com/">SolidShops</a> (hosted e-commerce platform)</li>
       <li><a href="http://sqlfiddle.com">SQLFiddle</a> (SQL playground)</li>
       <li><a href="https://thefiletree.com">The File Tree</a> (collab editor)</li>