Add adowair as reviewer, owner of Arabic content

This commit will add adowair as an owner (approver) and reviewer
for Arabic content on the website.

Signed-off-by: Ali Dowair <adowair@umich.edu>

OWNERS_ALIASES

@@ -198,8 +198,10 @@ aliases:
     - idvoretskyi
     - MaxymVlasov
   sig-docs-ar-owners: # Admins for Arabic content
+    - adowair
     - mboukhalfa
   sig-docs-ar-reviews: # PR reviews for Arabic content
+    - adowair
     - mboukhalfa
   # authoritative source: git.k8s.io/community/OWNERS_ALIASES
   committee-steering: # provide PR approvals for announcements