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/aura.md

@@ -5,11 +5,11 @@
 
 - Search for packages from the official repositories and AUR:
 
-`aura --aursync --both --search {{package_name|search_regex}}`
+`aura --aursync --both --search {{keyword|regular_expression}}`
 
 - Install a package from the AUR:
 
-`aura --aursync {{package_name}}`
+`aura --aursync {{package}}`
 
 - Update all AUR packages in a verbose mode and remove all make dependencies:
 
@@ -17,7 +17,7 @@
 
 - Install a package from the official repositories:
 
-`aura --sync {{package_name}}`
+`aura --sync {{package}}`
 
 - Synchronize and update all packages from the official repositories:
 
@@ -25,11 +25,11 @@
 
 - Downgrade a package using the package cache:
 
-`aura --downgrade {{package_name}}`
+`aura --downgrade {{package}}`
 
 - Remove a package and its dependencies:
 
-`aura --remove --recursive --unneeded {{package_name}}`
+`aura --remove --recursive --unneeded {{package}}`
 
 - Remove orphan packages (installed as dependencies but not required by any package):