More explanations in the savefluxes option. Last minor correction

pcigale/analysis_modules/savefluxes/__init__.py

@@ -48,7 +48,7 @@ class SaveFluxes(AnalysisModule):
     parameter_list = OrderedDict([
         ("output_file", (
             "string",
-            "Name of the output file that contains the parameters of the model(s)"
+            "Name of the output file that contains the parameters of the model(s) "
             "and the flux densities in the bands",
             "computed_fluxes.txt"
         )),