style: fix docstring for docs pages

src/keycloak/keycloak_admin.py

@@ -1530,7 +1530,7 @@ class KeycloakAdmin:
 
         :param role_name: The name of the role to be updated
         :param payload: The role (use RoleRepresentation)
-        :return Keycloak server response
+        :return: Keycloak server response
         """
         params_path = {"realm-name": self.realm_name, "role-name": role_name}
         data_raw = self.raw_put(
@@ -1543,7 +1543,7 @@ class KeycloakAdmin:
         """Delete a role for the realm by name.
 
         :param payload: The role name {'role-name':'name-of-the-role'}
-        :return Keycloak server response
+        :return: Keycloak server response
         """
         params_path = {"realm-name": self.realm_name, "role-name": role_name}
         data_raw = self.raw_delete(