feat(card): slight wording change

Signed-off-by: Damien Degois <[email protected]>

Author: babs

cards/merge_request.yaml.j2

@@ -199,7 +199,7 @@ body:
         verticalContentAlignment: Center
         items:
         - type: TextBlock
-          text: Approvals
+          text: Approved by
           size: Small
           weight: Bolder
           wrap: true