✏ Fix typo/clarify docs for SQL (Relational) Databases

[kangni]

By way of code example, I think this is a typo. btw, the tutorial is very well written.

[codecov]

Codecov Report

Merging #2393 (66f7737) into master (7d7289a) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##            master     #2393   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          240       240           
  Lines         7101      7101           
=========================================
  Hits          7101      7101           

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update b53c443...66f7737. Read the comment docs.

[github-actions]

📝 Docs preview for commit 66f7737 at: https://5fba3545ec6a9b9ef01f5b83--fastapi.netlify.app

[ycd]

Instead of deleting you can change because i think @tiangolo meant read a single user here.

• Read multiple users.
• Read a single user.
• Read multiple items.

[tiangolo]

Good catch! Thanks @kangni ! 🔍 🚀

And thanks @ycd for the help. ☕ 🍰