update changelog

 - Legacy-Id: 19809

Author: rjsparks

changelog

@@ -23,6 +23,10 @@ ietfdb (7.42.0) ietf; urgency=medium
   * Merged in [19804] from rjsparks@nostrum.com:
     Pin tastypie at 0.14.3. Related to #3500.  
 
+  * Merged in [19806] from rjsparks@nostrum.com:
+    Correct the url for the bibtex button. Provide a pdfized button. Fixes
+    #3501.
+
  -- Robert Sparks <rjsparks@nostrum.com>  05 Jan 2022 19:40:16 +0000