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

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

pages/common/git-force-clone.md

@@ -1,6 +1,6 @@
 # git force-clone
 
-> Provides the basic functionality of `git clone`, but if the destination git repository already exists it will force-reset it to resemble a clone of the remote.
+> Provides the basic functionality of `git clone`, but if the destination Git repository already exists it will force-reset it to resemble a clone of the remote.
 > Part of `git-extras`.
 > More information: <https://github.com/tj/git-extras/blob/master/Commands.md#git-force-clone>.