correct typos

+PlotID/@config/config.m

@@ -45,7 +45,7 @@ classdef config < handle
         
         function outputArg = checkConfig(obj)
             %checkConfig validates the config file
-            % 1. Check if mandatory Fields are set
+            % 1. check if mandatory fields are set
             check = isfield(obj.configData,obj.mandatoryFields);
             outputArg = all(check);