user*, group*, add*, group*: add more info links (#5738)

* user*, group*, add*, group*:add more info links

* user*, group*: remove section numbers from manned.org links

* adduser, deluser: remove en locale from info links

* Update pages.it/linux/adduser.md

Co-authored-by: Axel Navarro <navarroaxel@gmail.com>

* Update pages.it/linux/deluser.md

Co-authored-by: Axel Navarro <navarroaxel@gmail.com>

* Update pages.pt_BR/linux/adduser.md

Co-authored-by: Axel Navarro <navarroaxel@gmail.com>

* Update pages.zh/linux/adduser.md

Co-authored-by: Axel Navarro <navarroaxel@gmail.com>

* Update pages/linux/adduser.md

Co-authored-by: Axel Navarro <navarroaxel@gmail.com>

* Update pages/linux/deluser.md

Co-authored-by: Axel Navarro <navarroaxel@gmail.com>

* Update pages.ko/linux/deluser.md

Co-authored-by: Axel Navarro <navarroaxel@gmail.com>

Co-authored-by: Axel Navarro <navarroaxel@gmail.com>

pages/linux/userdel.md

@@ -2,7 +2,7 @@
 
 > Remove a user account or remove a user from a group.
 > Note: all commands must be executed as root.
-> More information: <https://man7.org/linux/man-pages/man8/userdel.8.html>.
+> More information: <https://manned.org/userdel>.
 
 - Remove a user: