* add ./ to the script to generate certificates
* add a step to verify the subject of the ingress gateway certificate
* add a step to verify the subject of the CA certificate
put the mutual TLS troubleshooting into a separate subsection
* fix the level of the mutual TLS troubleshooting
* remove redundant empty lines
* verify the subject is correct -> verify that the subject is correct
* another case: verify the subject is correct -> verify that the subject is correct
- 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.