clarify that parallel ACCEPTs were not allowed prior to 3.2

i2p2www/pages/site/docs/api/samv3.html

@@ -83,7 +83,7 @@ Version 3.2 is not yet implemented, and the changes listed below are preliminary
     <li>AUTH REMOVE USER=foo removes this user
   </ul>
 <li>Multiple concurrent pending STREAM ACCEPTs are allowed on the same session ID (even with the same port).
-    It isn't clear (either in the spec or the code) if these are allowed now.
+    Prior to 3.2, concurrent accepts would fail with ALREADY_ACCEPTING.
 <li>The server's control socket may optionally offer SSL/TLS support, as configured on the server and client.
     Implementations may offer other transport layers as well; this is outside the scope of the protocol definition.
 <li>For STREAM FORWARD, client may add SSL=true to use an SSL socket