Adding service-team members in the team controller alias (#48)

Issue #, if available:

Description of changes:

Adding `service-team` members in the team controller alias, inside the `OWNERS_ALIASES` file.

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Author: Vandita2020

OWNERS_ALIASES

@@ -8,4 +8,6 @@ aliases:
     - RedbackThomson
     - vijtrip2
   # TODO: Add your team members to your team controller alias
-  service-team: []
+  service-team: 
+    - Vandita2020
+    - valerena