docs: Resolve issues with 'patches'

docs: Resolve issues with 'patches'

Four issues to resolve:

- The 'tags' field is a key-value mapping, not an array.
- Each header in the 'headers' field can be either a string or a list
  value.
- Errors are reported as a mapping of the field name to an array of
  errors, not a string.
- The security type information isn't complete and doesn't account for
  security types. Skip it for now.

Signed-off-by: Stephen Finucane <stephen@that.guru>