Added further details to README.md instructions on response text

[tsamba120]

Description

Added further details on the API response text section of the instructions. I wasn't too familiar with this myself until looking at others' code. I thought it would be helpful for future contributors in a similar situation as me.

Screenshot

---

Checklist

• [ ] API used in this PR was not used in Random-APIs before.
• [ ] API used in this PR is Public or I have permission to use it.
• [ ] My contribution is working.
• [ ] My changes don't generate any new warnings.
• [ ] My changes don't affect any work done by other developers.

To tick a box, replace [ ] with [x].

[github-actions[bot]]

@tsamba120 Hurray, your PR got merged 🥳🎉. Thanks a bunch. Feel free to take another Issue.💖 All the best for your amazing open source journey ahead 🚀.