Made the formatting more consistent (#19979)

The formatting is now more consistent with the other files in the directory, also added a link to the Linux page.

guide/english/bash/bash-rm/index.md

@@ -8,8 +8,10 @@ title: Bash rm
 
 There are few commonly used arguments:
 
-- `r` , means to recursively delete all the folders inside a directory.
-- `f` , means to forcefully delete anything folder or file.
+- `-r` , means to recursively delete all the folders inside a directory.
+- `-f` , means to forcefully delete anything folder or file.
+- `-rf` , means that both arguments will be used together.
 
 ### More Information:
 * [Wikipedia](https://en.wikipedia.org/wiki/Rm_(Unix))
+* [Linux](https://linux.die.net/man/1/rm)