Issue: #1313
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**What kind of change does this PR introduce?**
Feature.
**Did you add tests for your changes?**
Yes.
**If relevant, did you update the documentation?**
Yes.
**Summary**
Supports keyboard shotcuts on MacOS. See Chrome Devtools Protocol
document:
https://chromedevtools.github.io/devtools-protocol/tot/Input/#method-dispatchKeyEvent.
This PR updates the docs regarding configuring puppeteer. In addition,
some changes have been made to the documentation generator to show
default values on the documentation site.
Also fixes: https://github.com/puppeteer/puppeteer/pull/9144
