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/join.md

@@ -5,19 +5,19 @@
 
 - Join two files on the first (default) field:
 
-`join {{file1}} {{file2}}`
+`join {{path/to/file1}} {{path/to/file2}}`
 
 - Join two files using a comma (instead of a space) as the field separator:
 
-`join -t {{','}} {{file1}} {{file2}}`
+`join -t {{','}} {{path/to/file1}} {{path/to/file2}}`
 
 - Join field3 of file1 with field1 of file2:
 
-`join -1 {{3}} -2 {{1}} {{file1}} {{file2}}`
+`join -1 {{3}} -2 {{1}} {{path/to/file1}} {{path/to/file2}}`
 
 - Produce a line for each unpairable line for file1:
 
-`join -a {{1}} {{file1}} {{file2}}`
+`join -a {{1}} {{path/to/file1}} {{path/to/file2}}`
 
 - Join a file from `stdin`: