Remove a bunch of entries that shouldn't have been in the spelling dictionary
and correct content aoocrdingly.
I'm disabling the Chinese spell checking for now, since I'm not able to fix the
spelling errors that emerged there. Once this PR is in, I'll file an issue to get
those spelling errors addressed and checking reenabled.
- Add <github_file> <github_blob> and <github_tree> to make it simpler to link to the right
place on GitHub.
- Use these new sequences throughout the docs.
- Also, fix bad HTML generated for the TOC in certain cirsumstances.
- Fix extra blank line inserted at the bottom of indented code blocks.
- Remove What's next sections since we now have auto-generated See also sections
- Fix a few incorrectly capitalized headers, "istio", "kubernetes", "sidecar"