Copy edit prevent-cache.txt

Note: For guidelines and instructions pages linked below, log in with user name / password: drupal/drupal.

Task for this issue

Copy edit the following topic:

Title: Concept: Cache
Section: Preventing and Fixing Problems
File name: prevent-cache.txt

Look for:
- Typographical errors
- Spelling errors
- Grammar and usage errors
- Punctuation problems
- Adherence to the project's editing guidelines: https://userguide_new-drupal.dev.devdrupal.org/guidelines/guidelines-edi... (access: drupal / drupal )
- Adherence to the project's writing guidelines: https://userguide_new-drupal.dev.devdrupal.org/guidelines/guidelines-wri... (access: drupal / drupal )
- Formatting problems in the output. The User guide output can be found on: https://userguide_new-drupal.dev.devdrupal.org/d8guide/en/index.html (access: drupal / drupal )

Note that the "single-issue" guidelines in the Editing guidelines page, as well as the entire Writing guidelines page, should have already been enforced. But it is still a good idea to at least check them quickly.

Instructions

See https://userguide_new-drupal.dev.devdrupal.org/guidelines/instructions.h... -- but skip the section on finding a task to do, since you have selected this one.

Checklist for this task

- Is a patch file provided? If only one or a few topics were edited, you can instead attach the updated source file(s).
- Is the edit complete and correct?
- Is the work free from additional edits outside the scope of the provided guidelines or task?
- Is attribution provided? See https://userguide_new-drupal.dev.devdrupal.org/guidelines/guidelines.htm...