Simplify some Otherwise logic in Expansion.

Fixes #97.

Author: gkellogg

index.html

@@ -2200,7 +2200,7 @@ <h3>Algorithm</h3>
                   where <var>ev</var> is represented as an <a>array</a>.</li>
               </ol>
             </li>
-            <li>Otherwise, if the <a>term definition</a> associated to
+            <li>If the <a>term definition</a> associated to
               <var>key</var> indicates that it is a <a>reverse property</a>
               <ol>
                 <li>If <var>result</var> has no <code>@reverse</code> <a>member</a>, create
@@ -2222,7 +2222,7 @@ <h3>Algorithm</h3>
                 </li>
               </ol>
             </li>
-            <li>Otherwise, if <var>key</var> is not a <a>reverse property</a>:
+            <li>Otherwise, <var>key</var> is not a <a>reverse property</a>:
               <ol>
                 <li>If <var>result</var> does not have an <var>expanded property</var>
                   <a>member</a>, create one and initialize its value to an empty