bpo-34906: Doc: Fix typos (GH-9712)

(cherry picked from commit 07fbbfde1b300369b4f8d1cfb80045fbb23b7091)

Co-authored-by: Stéphane Wirtel <stephane@wirtel.be>
diff --git a/Lib/bdb.py b/Lib/bdb.py
index 880ff5d..25c6260 100644
--- a/Lib/bdb.py
+++ b/Lib/bdb.py
@@ -74,7 +74,7 @@
             return: A function or other code block is about to return.
             exception: An exception has occurred.
             c_call: A C function is about to be called.
-            c_return: A C functon has returned.
+            c_return: A C function has returned.
             c_exception: A C function has raised an exception.
 
         For the Python events, specialized functions (see the dispatch_*()