pages*: fix brand and technical names (#12145)

* pages*: fix Python, Java, pacman, apt, *zip*, xz, tar, git, RPM and grep names

* pages*: fix brand and technical names

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

* fluxctl, gitmoji, in-toto-run, osv-scanner: replace `git` with Git

* bzegrep: enclose egrep with backticks

Co-authored-by: Sebastiaan Speck <12570668+sebastiaanspeck@users.noreply.github.com>

* git-bug: use Git instead of `git`

Co-authored-by: Sebastiaan Speck <12570668+sebastiaanspeck@users.noreply.github.com>

* git-bug: use Git instead of `git`

Co-authored-by: Sebastiaan Speck <12570668+sebastiaanspeck@users.noreply.github.com>

* git-force-clone: use Git instead of `git`

Co-authored-by: Sebastiaan Speck <12570668+sebastiaanspeck@users.noreply.github.com>

* gitwatch: use Git instead of `git`

Co-authored-by: Sebastiaan Speck <12570668+sebastiaanspeck@users.noreply.github.com>

* hub-init: use Git instead of `git`

Co-authored-by: Sebastiaan Speck <12570668+sebastiaanspeck@users.noreply.github.com>

* pages.*: use Linux instead of GNU/Linux

---------

Co-authored-by: Lena <126529524+acuteenvy@users.noreply.github.com>
Co-authored-by: Sebastiaan Speck <12570668+sebastiaanspeck@users.noreply.github.com>

pages/common/ptargrep.md

@@ -3,7 +3,7 @@
 > Find regular expression patterns in tar archive files.
 > More information: <https://manned.org/ptargrep>.
 
-- Search for a pattern within a tar file:
+- Search for a pattern within a `tar` archive:
 
 `ptargrep "{{search_pattern}}" {{path/to/file}}`
 
@@ -15,6 +15,6 @@
 
 `ptargrep --basename "{{search_pattern}}" {{path/to/file}}`
 
-- Search for a case-insensitive pattern matching within a tar file:
+- Search for a case-insensitive pattern matching within a `tar` archive:
 
 `ptargrep --ignore-case "{{search_pattern}}" {{path/to/file}}`