make string raw for re escape sequence

FastenersCmd.py

@@ -610,7 +610,7 @@ def onDocumentRestored(self, obj):
 
     def CleanDecimals(self, val):
         val = str(val)
-        if len(re.findall("[.]\d*$", val)) > 0:
+        if len(re.findall(r"[.]\d*$", val)) > 0:
             return val.rstrip('0').rstrip('.')
         return val