pages/*, style-guide: update contents, fix Markdown (#10492)

* pages/*, style-guide: update pages, fix Markdown (commit 1)

* Update pages

* style-guide.de: update page

* Apply suggestions from code review

Co-authored-by: Lena <126529524+acuteenvy@users.noreply.github.com>

* Apply suggestions from code review

Co-authored-by: Lena <126529524+acuteenvy@users.noreply.github.com>

* pip3: remove search command

* rpm: update path placeholder

Co-authored-by: pixel <pixel+github@chrissx.de>

* Update pages/linux/pkgfile.md

Co-authored-by: Lena <126529524+acuteenvy@users.noreply.github.com>

---------

Co-authored-by: Lena <126529524+acuteenvy@users.noreply.github.com>
Co-authored-by: pixel <pixel+github@chrissx.de>

pages/linux/pacman-remove.md

@@ -6,15 +6,15 @@
 
 - Remove a package and its dependencies:
 
-`sudo pacman --remove --recursive {{package_name}}`
+`sudo pacman --remove --recursive {{package}}`
 
 - Remove a package and both its dependencies and configuration files:
 
-`sudo pacman --remove --recursive --nosave {{package_name}}`
+`sudo pacman --remove --recursive --nosave {{package}}`
 
 - Remove a package without prompting:
 
-`sudo pacman --remove --noconfirm {{package_name}}`
+`sudo pacman --remove --noconfirm {{package}}`
 
 - Remove orphan packages (installed as dependencies but not required by any package):
 
@@ -22,11 +22,11 @@
 
 - Remove a package and all packages that depend on it:
 
-`sudo pacman --remove --cascade {{package_name}}`
+`sudo pacman --remove --cascade {{package}}`
 
 - List packages that would be affected (does not remove any packages):
 
-`pacman --remove --print {{package_name}}`
+`pacman --remove --print {{package}}`
 
 - Display help for this subcommand: