Fix name: `engine_limits` -> `enforced_limits`

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 91.66667% with 1 line in your changes missing coverage. Please review.

Project coverage is 80.50%. Comparing base (6820fcc) to head (9a1d792).

Files	Patch %	Lines
crates/wasmi/src/module/parser.rs	90.90%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #1079 +/- ## ======================================= Coverage 80.50% 80.50% ======================================= Files 269 269 Lines 24992 24992 ======================================= Hits 20120 20120 Misses 4872 4872 ```

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