fix: add aikidave as reviewer for DOCS: Marketing (#37014)

It makes sense that the lead technical writer should be allowed
to approve changes to DOCS: Marketing. The inspriration for this
change came to the current lead technical writer in a vision, or
perhaps it was a fugue state caused by too little caffeine. No
one knows. It's still a good idea though.

PR Close #37014

Author: David Shevitz 🔵

.pullapprove.yml

@@ -777,10 +777,10 @@ groups:
           ])
     reviewers:
       users:
+        - aikidave
         - IgorMinar
         - StephenFluin
 
-
   # =========================================================
   #  Docs: Observables
   # =========================================================