fix(ci): docker image push readme updates

[d33bs]

Description

This PR fixes the location reference for the pycytominer README.md to be used with updating the Docker Hub repository description (fixing the error in this job).

What is the nature of your change?

• [x] Bug fix (fixes an issue).
• [ ] Enhancement (adds functionality).
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected).
• [ ] This change requires a documentation update.

Checklist

Please ensure that all boxes are checked before indicating that a pull request is ready for review.

• [x] I have read the CONTRIBUTING.md guidelines.
• [x] My code follows the style guidelines of this project.
• [x] I have performed a self-review of my own code.
• [ ] I have commented my code, particularly in hard-to-understand areas.
• [ ] I have made corresponding changes to the documentation.
• [x] My changes generate no new warnings.
• [x] New and existing unit tests pass locally with my changes.
• [ ] I have added tests that prove my fix is effective or that my feature works.
• [x] I have deleted all non-relevant text in this pull request template.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 94.72%. Comparing base (43e2285) to head (1da5d07).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #398 +/- ## ======================================= Coverage 94.72% 94.72% ======================================= Files 56 56 Lines 3147 3147 ======================================= Hits 2981 2981 Misses 166 166 ``` | [Flag](https://app.codecov.io/gh/cytomining/pycytominer/pull/398/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=cytomining) | Coverage Δ | | |---|---|---| | [unittests](https://app.codecov.io/gh/cytomining/pycytominer/pull/398/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=cytomining) | `94.72% <ø> (ø)` | | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=cytomining#carryforward-flags-in-the-pull-request-comment) to find out more.

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[d33bs]

Thank you @kenibrewer ! Merging this in.

[d33bs]

Just a quick follow up here: the job task initially failed after merge here due to the Docker token not having appropriate permissions. On updating this to what is needed by https://github.com/peter-evans/dockerhub-description and re-running the failed job, it succeeded and placed the readme content on https://hub.docker.com/r/cytomining/pycytominer.