bootc: add page + portuguese translation

[tulilirockz]

• The page(s) are in the correct platform directories: common, linux, osx, windows, sunos, android, etc.
• The page(s) have at most 8 examples.
• The page description(s) have links to documentation or a homepage.
• The page(s) follow the content guidelines.
• The page(s) follow the style guide.
• [?] The PR title conforms to the recommended templates.
• Version of the command being documented (if known):

bootc 1.1.2

[CLAassistant]

All committers have signed the CLA.

[tldr-bot]

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

• The page pages.pt_BR/linux/bootc.md has a more info link that does not match the one in the English page. Please check the "More information:" translation as well using https://github.com/tldr-pages/tldr/blob/main/contributing-guides/translation-templates/more-info-link.md.

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

[tulilirockz]

whoever made this bot did such a good job. finally figured out what was wrong

[tldr-bot]

The build for this PR failed with the following error(s):

pages/linux/bootc.md:11: TLDR005 Example descriptions should end in a colon with no trailing characters
pages.pt_BR/linux/bootc.md:19: TLDR005 Example descriptions should end in a colon with no trailing characters

Please fix the error(s) and push again.

[renie]

Just some small issues. Thanks for your contribution @tulilirockz ! 🚀

[tulilirockz]

Squashed and rebased the changes - Thank you for the corrections! I was sleepy when I made those translations :p