pages*: add missing mnemonics (#12151)

* pages*: add missing mnemonics

---------

Co-authored-by: Sebastiaan Speck <12570668+sebastiaanspeck@users.noreply.github.com>
Co-authored-by: Lena <126529524+acuteenvy@users.noreply.github.com>
Co-authored-by: K.B.Dharun Krishna <kbdharunkrishna@gmail.com>

pages/common/bup.md

@@ -3,15 +3,15 @@
 > Backup system based on the Git packfile format, providing incremental saves and global deduplication.
 > More information: <https://github.com/bup/bup>.
 
-- Initialize a backup repository in the specified local directory:
+- Initialize a backup repository in a given local [d]irectory:
 
 `bup -d {{path/to/repository}} init`
 
-- Prepare a given directory before taking a backup:
+- Prepare a given [d]irectory before taking a backup:
 
 `bup -d {{path/to/repository}} index {{path/to/directory}}`
 
-- Backup a directory to the repository:
+- Backup a [d]irectory to the repository specifying its [n]ame:
 
 `bup -d {{path/to/repository}} save -n {{backup_name}} {{path/to/directory}}`
 
@@ -19,6 +19,6 @@
 
 `bup -d {{path/to/repository}} ls`
 
-- Restore a specific backup snapshot to a target directory:
+- Restore a specific backup snapshot to a target dire[C]tory:
 
 `bup -d {{path/to/repository}} restore -C {{path/to/target_directory}} {{backup_name}}`