CALL_FUNCTION_EX still mention an argument (flags) in Python 3.14

# Documentation

https://docs.python.org/3.14/library/dis.html#opcode-CALL_FUNCTION_EX still references a flag value as argument to CALL_FUNCTION_EX while the argument was removed in https://github.com/python/cpython/pull/129226



### Linked PRs
* gh-138126