Merge pull request #656 from pe4cey/fix-typo-help-param

Fix typo in :help param

src/browser/modules/Help/html/param.html

@@ -5,7 +5,7 @@
       <p class="subtitle">Set a parameter to be sent with queries.</p>
     </div>
     <div class="content">
-      <p>The <code>:param name: 'Stella'</code> command will define a parameter named "name" and it will be sent along with your queries.<br/>Using parameters, rather than hard coding values, will allow fo reuse of the query plan cache</p>
+      <p>The <code>:param name: 'Stella'</code> command will define a parameter named "name" and it will be sent along with your queries.<br/>Using parameters, rather than hard coding values, will allow for reuse of the query plan cache</p>
       <p>Cypher query example with a param:&nbsp;<code>MATCH (n:Person) WHERE n.name = $name</code></p>
       <div class="links">
         <div class="link">