Fix typecheck note for match args of PsConstantFunction

src/pystencils/backend/functions.py

@@ -163,7 +163,7 @@ class PsConstantFunction(PsFunction):
     and will be broadcast by the vectorizer.
     """
 
-    __match_args__ = ("func,")
+    __match_args__ = ("func",)
 
     def __init__(
         self, func: ConstantFunctions, dtype: PsNumericType | None = None