update doc note

Author: SteveLLamb

doc/main.html

@@ -492,7 +492,7 @@ <h4>Conformance section</h4>
 </pre>
         </div>
 
-        <p class="note">This section and additional text is not allowed for AG, OM, and EG docs.</p>
+        <p>This section is prohibited when the document is an administrative guideline, operations manual or engineering guideline.</p>
 
       </section>