pages*: improve list placeholders and wording of descriptions (#12111)

* pages*: improve wording and list placeholders

* clamav: fix verb tenses

Co-authored-by: Juri Dispan <juri.dispan@posteo.net>

* buzzphrase: use k instead of n for number of phrases

Co-authored-by: Juri Dispan <juri.dispan@posteo.net>

* adguardhome: use non-default instead of different

* adguardhome: use configuration instead of config

Co-authored-by: K.B.Dharun Krishna <kbdharunkrishna@gmail.com>

* goimports, module: fix list placeholders

Co-authored-by: K.B.Dharun Krishna <kbdharunkrishna@gmail.com>

* pages*: leave stems and extensions in the same placeholders

* pages*: fix list placeholders

* pages*: fix list placeholders

* pages*: apply suggestions from code review

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

* qpdf: enclose n with backticks

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

---------

Co-authored-by: Juri Dispan <juri.dispan@posteo.net>
Co-authored-by: K.B.Dharun Krishna <kbdharunkrishna@gmail.com>
Co-authored-by: Lena <126529524+acuteenvy@users.noreply.github.com>

pages/windows/choco-upgrade.md

@@ -3,7 +3,7 @@
 > Upgrade one or more packages with Chocolatey.
 > More information: <https://chocolatey.org/docs/commands-upgrade>.
 
-- Upgrade one or more space-separated packages:
+- Upgrade one or more packages:
 
 `choco upgrade {{package1 package2 ...}}`
 
@@ -17,7 +17,7 @@
 
 - Upgrade all except specified comma-separated packages:
 
-`choco upgrade all --except "{{package1 package2 ...}}"`
+`choco upgrade all --except "{{package1,package2,...}}"`
 
 - Confirm all prompts automatically: