Update cheatsheets

tldr/linux/pacman

@@ -10,7 +10,7 @@ source: https://github.com/tldr-pages/tldr.git
 > For equivalent commands in other package managers, see <https://wiki.archlinux.org/title/Pacman/Rosetta>.
 > More information: <https://manned.org/pacman.8>.
 
-- Synchronize and update all packages:
+- [S]ynchronize and update all packages:
 
 `sudo pacman -Syu`
 
@@ -18,23 +18,23 @@ source: https://github.com/tldr-pages/tldr.git
 
 `sudo pacman -S {{package}}`
 
-- Remove a package and its dependencies:
+- [R]emove a package and its dependencies:
 
 `sudo pacman -Rs {{package}}`
 
-- Search the database for packages containing a specific file:
+- Search ([s]) the package database for a regular expression or keyword:
+
+`pacman -Ss "{{search_pattern}}"`
+
+- Search the database for packages containing a specific [F]ile:
 
 `pacman -F "{{file_name}}"`
 
-- List installed packages and versions:
-
-`pacman -Q`
-
-- List only the explicitly installed packages and versions:
+- List only the [e]xplicitly installed packages and versions:
 
 `pacman -Qe`
 
-- List orphan packages (installed as dependencies but not actually required by any package):
+- List orphan packages (installed as [d]ependencies but not actually required by any package):
 
 `pacman -Qtdq`