Update config_generator.py (#71)

Fix error, where the path of the themes_config.json is given to a function instead of its contents (json dict)

src/config_generator/config_generator.py

@@ -236,14 +236,14 @@ def __init__(self, config, logger, config_file_dir):
         self.preprocess_qgs_projects(generator_config, self.tenant)
 
         # Search for QGS projects in scan dir and automatically generate theme items
-        self.search_qgs_projects(generator_config, themes_config)
+        self.search_qgs_projects(generator_config, config["themesConfig"])
 
         # Search for QGS print layouts
         print_layouts = self.search_print_layouts(generator_config)
 
         # load metadata for all QWC2 theme items
         self.theme_reader = ThemeReader(
-            generator_config, themes_config, self.logger, print_layouts
+            generator_config, config["themesConfig"], self.logger, print_layouts
         )
 
         # lookup for additional service configs by name