Fixing HTML in check instructions #3293

[derekashauer]

Instructions for check payments would save with < p > tags wrapping everything and show it in the admin textarea box after saving

All Submissions:

• Have you followed the Contributing guideline?
• Does your code follow the WordPress' coding standards?
• Have you checked to ensure there aren't other open Pull Requests for the same update/change?

Changes proposed in this Pull Request:

Resolves #3293 by using esc_textarea to properly prep the text for the textarea field

How to test the changes in this Pull Request:

1. Admin settings go to Payment Gateway
2. Choose check
3. Enter instructions, save

Other information:

• Have you added an explanation of what your changes do and why you'd like us to include them?
• Have you successfully run tests with your changes locally?

Changelog entry

Enter a summary of all changes on this Pull Request. This will appear in the changelog if accepted.

Fix issue saving check payment instructions adding unnecessary < p > tags in admin settings