I changed my surname early this year (python#96671)

* I recently changed my name

* Update ACKS

Author: tshepang

Doc/howto/argparse.rst

@@ -2,7 +2,7 @@
 Argparse Tutorial
 *****************
 
-:author: Tshepang Lekhonkhobe
+:author: Tshepang Mbambo
 
 .. _argparse-tutorial:
 

Misc/ACKS

@@ -1049,7 +1049,7 @@ Robert Lehmann
 Petri Lehtinen
 Luke Kenneth Casson Leighton
 John Leitch
-Tshepang Lekhonkhobe
+Tshepang Mbambo
 Marc-André Lemburg
 Mateusz Lenik
 John Lenton