Add issue marker for extension point reservation discussion.

Co-authored-by: Manu Sporny <[email protected]>

Author: OR13

index.html

@@ -3281,6 +3281,13 @@ <h3>Reserved Extension Points</h3>
 reserved property. For more information related to adding `type` information,
 see Section <a href="#types"></a>.
         </p>
+        <p class="issue" title="Extension points under consideration by the Working Group">
+          The working group is discussing if additional extension points 
+          will be reserved in <a href="https://www.w3.org/ns/credentials/v2">https://www.w3.org/ns/credentials/v2</a>.
+          <br/>
+          The working group currently plans to only reserve extension points that 
+          have at least a draft specification that is being incubated in a community group.
+        </p>
 
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           <thead>