typos

#installation.md

@@ -167,7 +167,7 @@ en_US.UTF-8 UTF-8
 
 If the system is installed in a virtual environment or a system with deactivated UEFI, don't forget to enable the EFI option, otherwise the system won't boot.
 
-## 12. Activate Networkconnection
+## 12. Activate network connection
 
 - Log in as ```root``` user
 - `systemctl enable NetworkManager.service` - Activate NetworkManager
@@ -186,7 +186,7 @@ Using ```nmtui``` you can administer the wired and wireless connections
 
 ## 14. Create user
 
-- `vim /etc/sudoers` - Open suoders file
+- `vim /etc/sudoers` - Open sudoers file
 	-	uncomment the following lines
 		```
 		%whell All=(ALL) ALL