vagrant-box: add page

[aminelch]

• 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):

[CLAassistant]

All committers have signed the CLA.

[tldr-bot]

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

pages/common/vagrant-box.md:8: TLDR014 Page should contain no trailing whitespace
pages/common/vagrant-box.md:12: TLDR014 Page should contain no trailing whitespace
pages/common/vagrant-box.md:16: TLDR014 Page should contain no trailing whitespace
pages/common/vagrant-box.md:20: TLDR014 Page should contain no trailing whitespace
pages/common/vagrant-box.md:23: TLDR104 Example descriptions should prefer infinitive tense (e.g. write) over present (e.g. writes) or gerund (e.g. writing)
pages/common/vagrant-box.md:24: TLDR014 Page should contain no trailing whitespace
pages/common/vagrant-box.md:28: TLDR014 Page should contain no trailing whitespace
pages/common/vagrant-box.md:31: TLDR104 Example descriptions should prefer infinitive tense (e.g. write) over present (e.g. writes) or gerund (e.g. writing)
pages/common/vagrant-box.md:32: TLDR014 Page should contain no trailing whitespace
pages/common/vagrant-box.md:36: TLDR014 Page should contain no trailing whitespace
pages/common/vagrant-box.md:38: TLDR008 File should contain no trailing whitespace

Please fix the error(s) and push again.

[gutjuri]

Thanks! I have added some suggestions adding placeholders where appropriate

[Managor]

Looks good to go

[MachiavelliII]

Thanks!