Remove trailing whitespace from config_manager.py

Co-authored-by: jtemporal <6595551+jtemporal@users.noreply.github.com>

Author: Copilot

scripts/config_manager.py

@@ -39,7 +39,7 @@ def _setup_paths(self):
 
         # Theme configuration
         self.theme_path = self.root_dir / 'gitfichas-mermaid-theme.json'
-        
+
         # Puppeteer configuration
         self.puppeteer_config_path = Path('/tmp/puppeteer-config.json')