Remove repeated @explicit.

Fixes #367.

Author: gkellogg

index.html

@@ -2767,7 +2767,7 @@ <h3>Algorithm</h3>
                   Continue with the next <var>key</var> from <var>element</var>.</li>
                 <li class="changed">When the {{JsonLdOptions/frameExpansion}} flag is set,
                   if <var>expanded property</var> is any other
-                  framing keyword (<code>@explicit</code>, <code>@default</code>,
+                  framing keyword (<code>@default</code>,
                   <code>@embed</code>, <code>@explicit</code>, <code>@omitDefault</code>, or
                   <code>@requireAll</code>),
                   set <var>expanded value</var> to the result of performing the