[skip ci] pull request template typo fix

[grooverdan]

• The Jira issue number for this PR is: MDEV-______

Description

typo fix. Though Cody is a good friend there is no codying style that can be easily repeated by anyone.

Release Notes

nothing.

How can this PR be tested?

:set spell

If the changes are not amenable to automated testing, please explain why not and carefully describe how to test manually.

Basing the PR against the correct MariaDB version

• This is a new feature or a refactoring, and the PR is based against the main branch.
• This is a bug fix, and the PR is based against the earliest maintained branch in which the bug can be reproduced.

PR quality check

• I checked the CODING_STANDARDS.md file and my PR conforms to this where appropriate.
• For any trivial modifications to the PR, I am ok with the reviewer making the changes themselves.

[svoj]

FWIW this is fixed in #3992

[grooverdan]

ok. lets fix it there.