add fabriziopandini as website.it approver (#18161)

Author: fabriziopandini

OWNERS_ALIASES

@@ -109,10 +109,12 @@ aliases:
     - girikuncoro
     - irvifa
   sig-docs-it-owners: # Admins for Italian content
+    - fabriziopandini
     - mattiaperi
     - micheleberardi
     - rlenferink
   sig-docs-it-reviews: # PR reviews for Italian content
+    - fabriziopandini
     - mattiaperi
     - micheleberardi
     - rlenferink