Fix typo in tutorials/README.md

[codecov[bot]]

Codecov Report

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

Project coverage is 76.63%. Comparing base (7005ccd) to head (d6ab512).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #46 +/- ## ========================================== - Coverage 76.64% 76.63% -0.02% ========================================== Files 16 16 Lines 3533 3531 -2 Branches 554 478 -76 ========================================== - Hits 2708 2706 -2 - Misses 667 668 +1 + Partials 158 157 -1 ```

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[dalcinl]

Looks like the TensorFlow stuff is broken? Anyway, I guess we can merge this one and deal with the test failure at a later point?