Update compiler/cpp/src/thrift/generate/t_py_generator.cc

Review: document explicit int enum generation requirement instead of implicit

Co-authored-by: r/Salomon Smeke <134332337+salomon-smekecohen@users.noreply.github.com>
diff --git a/compiler/cpp/src/thrift/generate/t_py_generator.cc b/compiler/cpp/src/thrift/generate/t_py_generator.cc
index 90bfd05..7b5c54d 100644
--- a/compiler/cpp/src/thrift/generate/t_py_generator.cc
+++ b/compiler/cpp/src/thrift/generate/t_py_generator.cc
@@ -3015,5 +3015,5 @@
     "                     Package prefix for generated files.\n"
     "    old_style:       Deprecated. Generate old-style classes.\n"
     "    enum:            Generates Python's IntEnum, connects thrift to python enums. Python 3.4 and higher.\n"
-    "    type_hints:      Generate type hints and type checks in write method, including IntEnum generation.\n"
+    "    type_hints:      Generate type hints and type checks in write method. Requires the enum option.\n"
 )