Documentation/git-send-email: fix typo in gmail 2FA section

Signed-off-by: SZEDER Gábor <szeder@ira.uka.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Documentation/git-send-email.txt

@@ -450,7 +450,7 @@ edit ~/.gitconfig to specify your account settings:
 		smtpUser = yourname@gmail.com
 		smtpServerPort = 587
 
-If you have multifactor authentication setup on your gmail acocunt, you will
+If you have multifactor authentication setup on your gmail account, you will
 need to generate an app-specific password for use with 'git send-email'. Visit
 https://security.google.com/settings/security/apppasswords to setup an
 app-specific password.  Once setup, you can store it with the credentials