No. It's a common error for learners, but subordinate clauses, noun clauses, and relative cluses all do NOT use subject-verb inversion.
- Where is the restaurant?
- I don't know about you, but I'm going (to) where the restaurant is!
- I don't care where the restaurant is.
- I wanted to know where the restaurant is.
- The block where the restaurant is has totally changed.
- Where the restaurant is doesn't matter now - we can look at a map later!
Read Mihály Orth's comment.
Otherwise, you can read this: https://academichelp.net/general-writing-tips/grammar-handbook/subordinate-clauses.html