* docs(ignore): mention ignore file in Ignoring Code
While working on #3321, I needed to ignore an entire file, but the "Ignoring Code" section of the docs only describes how to ignore blocks of code, so I wasn't aware of the default ignore file.
(The `.prettierignore` file is mentioned in the CLI section, but easily overlooked there.)
This commit extends the introduction sentence of the "Ignoring Code" section and adds a new subsection to explain how to ignore files.
https://github.com/prettier/prettier/issues/3321#issuecomment-350072566
* docs(cli): fix nesting error in heading hierarchy
The `--ignore-path` option currently appears as a third-level subsection of `--find-config-path` and `--config`, but this looks like an error.
This commit promotes the `--ignore-path` heading to the same (H2) level as the other CLI options.
Ika