Updating method name

Co-authored-by: Lena Garber <114949949+lgarber-akamai@users.noreply.github.com>

Author: pmajali

linode_api4/groups/monitor.py

@@ -66,7 +66,7 @@ def dashboard_by_ID(self, dashboard_id: int, *filters):
         return DashboardsByID(self.client, result["id"], result)
 
 
-    def dashboard_by_service(self, service_type: str,*filters):
+    def dashboards_by_service(self, service_type: str, *filters):
         """
         Returns a dashboards on your account based on the service passed.