bpo-32911: Update the historical note about the magic number. (GH-7272)
diff --git a/Lib/importlib/_bootstrap_external.py b/Lib/importlib/_bootstrap_external.py
index f4be862..53b24ff 100644
--- a/Lib/importlib/_bootstrap_external.py
+++ b/Lib/importlib/_bootstrap_external.py
@@ -246,7 +246,7 @@
# Python 3.7a2 3391 (update GET_AITER #31709)
# Python 3.7a4 3392 (PEP 552: Deterministic pycs #31650)
# Python 3.7b1 3393 (remove STORE_ANNOTATION opcode #32550)
-# Python 3.7rc1 3394 (restored docstring as the firts stmt in the body;
+# Python 3.7b5 3394 (restored docstring as the firts stmt in the body;
# this might affected the first line number #32911)
#
# MAGIC must change whenever the bytecode emitted by the compiler may no