Fixing a few errors in the template routing for custom theme overrides

[XanderCalvert]

🎫 Ticket

ET-1491

🗒️ Description

While doing some work with the plug in I noticed that some of the template override locations were wrong and if I can save someone else 20 mins of head scratching that would be worth while.

Just amending comments

Wrong routes mentioned

Did a search through the plugin in VScode so should have gotten them all for you guys

🎥 Artifacts

✔️ Checklist

• [ ] I've included a changelog entry in the readme.txt file.
• [ ✔️] My code is tested.
• [✔️ ] My code has proper inline documentation.

New to pull requests so hope I did it right for you guys

[juanfra]

Hi @XanderCalvert - Thanks a lot for your contribution. We're going to be including these changes in the upcoming release. 🎉

[rafsuntaskin]

@juanfra can you please approve this one? I will add the readme from the other PR: https://github.com/the-events-calendar/event-tickets/pull/2384