chore: fix typo

[valeriypushkar]

Small typo fix in _process function.

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[elopez]

Hi! thanks for the PR. I suspect this might have been done on purpose to keep mypy happy and it might not be a typo. We don't seem to be running mypy on CI these days though 🤔

[valeriypushkar]

Hi @elopez ! I've just run mypy locally on the whole project. Mypy found some issues but not in the fixed code lines. Mypy version is 1.13.0 (compiled: yes).
The issues in main.py file are:

__main__.py:17: error: Cannot find implementation or library stub for module named "crytic_compile"  [import-not-found]
__main__.py:18: error: Cannot find implementation or library stub for module named "crytic_compile.platform.standard"  [import-not-found]
__main__.py:19: error: Cannot find implementation or library stub for module named "crytic_compile.platform.etherscan"  [import-not-found]
__main__.py:253: error: Incompatible return value type (got "set[type[AbstractDetector]]", expected "list[type[AbstractDetector]]")  [return-value]
__main__.py:885: error: Function "output_to_sarif" could always be true in boolean context  [truthy-function]