Fix step 5.5.1.2 in the framing algorithm to only recurse if the data is coming from something other than the merge or default graphs, not based only the current graph state.

Fixes #502.

Author: gkellogg

spec/latest/json-ld-framing/index.html

@@ -938,8 +938,8 @@ <h3>Framing Algorithm</h3>
                 and set <em>subframe</em> to a new empty <a>dictionary</a>.</li>
               <li>Otherwise, set <em>subframe</em> to the first entry for <code>@graph</code> in <em>frame</em>,
                 or a new empty <a>dictionary</a>, if it does not exist, and
-                set <em>recurse</em> to <code>true</code>, unless <em>graph name</em>
-                in <em>state</em> is <code>@merged</code> or <code>@default</code>.</li>
+                set <em>recurse</em> to <code>true</code>, unless <em>id</em>
+                is <code>@merged</code> or <code>@default</code>.</li>
               <li>If <em>recurse</em> is <code>true</code>:
                 <ol class="algorithm">
                   <li>Push <em>graph name</em> from <em>state</em> onto <em>graph stack</em>