Remove the "experimental" verbiage from the references / referenced by pages. Fixes ietf-tools#2857. Commit ready for merge.

 - Legacy-Id: 17722

Author: meadmaker

ietf/templates/doc/document_referenced_by.html

@@ -15,7 +15,7 @@
   <h1>References to {{alias_name}}</h1>
 
   <p class="alert alert-info">
-    This is an experimental product. These dependencies are extracted using heuristics looking for strings with particular prefixes. Notably, this means that references to I-Ds by title only are not reflected here. If it's really important, please inspect the documents' references sections directly.
+    These dependencies are extracted using heuristics looking for strings with particular prefixes. Notably, this means that references to I-Ds by title only are not reflected here. If it's really important, please inspect the documents' references sections directly.
   </p>
 
   <p>

ietf/templates/doc/document_references.html

@@ -15,7 +15,7 @@
   <h1>References from {{doc.canonical_name}}</h1>
 
   <p class="alert alert-info">
-    This is an experimental product. These dependencies are extracted using heuristics looking for strings with particular prefixes. Notably, this means that references to I-Ds by title only are not reflected here. If it's really important, please inspect the documents' references sections directly.
+    These dependencies are extracted using heuristics looking for strings with particular prefixes. Notably, this means that references to I-Ds by title only are not reflected here. If it's really important, please inspect the documents' references sections directly.
   </p>
   <p>
     <a class="btn btn-default" href="{% url 'ietf.doc.views_help.relationship_help' subset='reference' %}">Reference type help</a>