fixup! Review the way we check if the command succeed.

Author: funilrys

PyFunceble/cli/system/integrator.py

@@ -154,7 +154,7 @@ def inject_into_config(self) -> "SystemIntegrator":
         return self
 
     @SystemBase.ensure_args_is_given
-    def check_config(self) -> "SystemIntegrator":
+    def check_config(self) -> "SystemIntegrator":  # pylint: disable=no-self-use
         """
         Checks or do some sanity check of the configuration.