pages.pl/*: update and add missing alias pages

[acuteenvy]

No description provided.

[acuteenvy]

#14824 should fix the bot comments.

[tldr-bot]

Hello! I've noticed something unusual when checking this PR:

• The page pages.pl/common/brave.md seems to be a copy of pages/common/brave.md (62% matching).
• The page pages.pl/common/fossil-ci.md is outdated, based on the command contents itself, compared to the English page.
• The page pages.pl/common/fossil-ci.md has a page title that does not match the one in the English page.
• The page pages.pl/common/fossil-new.md is outdated, based on the command contents itself, compared to the English page.
• The page pages.pl/common/fossil-new.md has a page title that does not match the one in the English page.
• The page pages.pl/common/gh-cs.md is outdated, based on the command contents itself, compared to the English page.
• The page pages.pl/common/gh-cs.md has a page title that does not match the one in the English page.
• The page pages.pl/common/npm-author.md has a page title that does not match the one in the English page.
• The page pages.pl/common/opera.md seems to be a copy of pages.pl/windows/chrome.md (63% matching).
• The page pages.pl/common/vivaldi.md seems to be a copy of pages.pl/windows/chrome.md (63% matching).
• The page pages.pl/linux/ip-route-list.md is outdated, based on the command contents itself, compared to the English page.
• The page pages.pl/linux/pacman-s.md is outdated, based on the command contents itself, compared to the English page.
• The page pages.pl/linux/qm-move_disk.md has a page title that does not match the one in the English page.
• The page pages.pl/windows/cpush.md is outdated, based on the command contents itself, compared to the English page.

Is this intended? If so, just ignore this comment. Otherwise, please double-check the commits.