docs: Add missing comma to docs/iam-permissions.md (#1437)

Author: agconti

docs/iam-permissions.md

@@ -109,7 +109,7 @@ Following IAM permissions are the minimum permissions needed for your IAM user o
                 "iam:DeleteInstanceProfile",
                 "iam:DeleteOpenIDConnectProvider",
                 "iam:DeletePolicy",
-                "iam:DeletePolicyVersion"
+                "iam:DeletePolicyVersion",
                 "iam:DeleteRole",
                 "iam:DeleteRolePolicy",
                 "iam:DeleteServiceLinkedRole",