Updated documentation for adding reports to cover permission restrict…

[Nazi-pikachu]

…ions

Fixes #6014
Please check the following:

• Do the tests still pass?¹
• Does the code comply with the style guide?
  • Run make lint from the Wagtail root.
• For Python changes: Have you added tests to cover the new/fixed behaviour?
• For front-end changes: Did you test on all of Wagtail’s supported environments?²
  • Please list the exact browser and operating system versions you tested:
  • Please list which assistive technologies ³ you tested:
• For new features: Has the documentation been updated accordingly?

Please describe additional details for testing this change.

Footnotes

1. Development Testing ↩

2. Browser and device support ↩

3. Accessibility Target ↩

[squash-labs]

Manage this branch in Squash

Test this branch here: https://nazi-pikachuupdate-doc-extendi-9xks7.squash.io

[gasman]

Thanks @Nazi-pikachu! Just a couple of small tweaks to make here.

[gasman]

Merged in 959a802.