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/common/asciinema.md

@@ -13,11 +13,11 @@
 
 - Make a new recording and save it to a local file:
 
-`asciinema rec {{path/to/file}}.cast`
+`asciinema rec {{path/to/file.cast}}`
 
 - Replay a terminal recording from a local file:
 
-`asciinema play {{path/to/file}}.cast`
+`asciinema play {{path/to/file.cast}}`
 
 - Replay a terminal recording hosted on asciinema.org:
 
@@ -29,8 +29,8 @@
 
 - Print the full output of a locally saved recording:
 
-`asciinema cat {{path/to/file}}.cast`
+`asciinema cat {{path/to/file.cast}}`
 
 - Upload a locally saved terminal session to asciinema.org:
 
-`asciinema upload {{path/to/file}}.cast`
+`asciinema upload {{path/to/file.cast}}`