Update walltypes_naming_convention_check.py

Fixed a syntax error that prevented preflight check tool from running.

extensions/pyRevitTools.extension/checks/walltypes_naming_convention_check.py

@@ -50,7 +50,7 @@ def check_model(doc, output):
     wall_counts = Counter((wall.Name for wall in walls))
 
     # Load wall list from JSON
-    allowed_wall_names = set(pick_json()["allowed_wall_types"])`"
+    allowed_wall_names = set(pick_json()["allowed_wall_types"])
 
     # Initialize results dictionary for found and wrong wall types
     wrong_wall_names = set(wall_counts) - allowed_wall_names