syntax fix in cct example

[codecov[bot]]

Codecov Report

Patch and project coverage have no change.

Comparison is base (7486af9) 76.76% compared to head (528c305) 76.76%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #898 +/- ## ======================================= Coverage 76.76% 76.76% ======================================= Files 329 329 Lines 31431 31431 Branches 6113 6113 ======================================= Hits 24128 24128 Misses 5730 5730 Partials 1573 1573 ``` | [Flag](https://app.codecov.io/gh/keras-team/keras-core/pull/898/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=keras-team) | Coverage Δ | | |---|---|---| | [keras_core](https://app.codecov.io/gh/keras-team/keras-core/pull/898/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=keras-team) | `76.66% <ø> (ø)` | | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=keras-team#carryforward-flags-in-the-pull-request-comment) to find out more.

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