Fix lexer doc comment typo

Author: jg-rp

jsonpath_rfc9535/lex.py

@@ -42,7 +42,7 @@ def __init__(self, query: str) -> None:
         """A running count of parentheses for each, possibly nested, function call.
         
         If the stack is empty, we are not in a function call. Remember that
-        function arguments can use arbitrarily nested in parentheses.
+        function arguments can be arbitrarily nested in parentheses.
         """
 
         self.tokens: List[Token] = []