[4.3] Update com_users.ini (#40698)

Author: brianteeman

administrator/language/en-GB/com_users.ini

@@ -178,7 +178,7 @@ COM_USERS_HEADING_LEVEL_NAME_DESC="Level Name descending"
 COM_USERS_HEADING_LFT="LFT"
 COM_USERS_HEADING_LFT_ASC="LFT ascending"
 COM_USERS_HEADING_LFT_DESC="LFT descending"
-COM_USERS_HEADING_MFA="Multi-factor Authentication"
+COM_USERS_HEADING_MFA="MFA"
 COM_USERS_HEADING_NAME="Name"
 COM_USERS_HEADING_REGISTRATION_DATE="Registered"
 COM_USERS_HEADING_REGISTRATION_DATE_ASC="Registration date ascending"