grub-mkconfig: move from / to pages/linux (#5350)

grub-mkconfig.md → pages/linux/grub-mkconfig.md

@@ -1,7 +1,7 @@
 # grub-mkconfig
 
 > Generate a GRUB configuration file.
-> More information: <https://www.gnu.org/software/grub/manual/grub/html_node/Invoking-grub_002dmkconfig.html>
+> More information: <https://www.gnu.org/software/grub/manual/grub/html_node/Invoking-grub_002dmkconfig.html>.
 
 - Do a dry run and print the configuration to stdout: