Add zacharysarah to docs approvers and reviewers for English language content

Author: zacharysarah

OWNERS_ALIASES

@@ -30,6 +30,7 @@ aliases:
     - savitharaghunathan
     - sftim
     - tengqm
+    - zacharysarah
   sig-docs-en-reviews: # PR reviews for English content
     - bradtopol
     - celestehorgan
@@ -43,6 +44,7 @@ aliases:
     - sftim
     - shannonxtreme
     - tengqm
+    - zacharysarah
   sig-docs-es-owners: # Admins for Spanish content
     - raelga
     - electrocucaracha