doc: Adjust name of resource mentioned in access_list_api_key resource docs page

Description

[ ] Bug fix (non-breaking change which fixes an issue). Please, add the "bug" label to the PR.
[ ] New feature (non-breaking change which adds functionality). Please, add the "enhancement" label to the PR. A migration guide must be created or updated if the new feature will go in a major version.
[ ] Breaking change (fix or feature that would cause existing functionality to not work as expected). Please, add the "breaking change" label to the PR. A migration guide must be created or updated.
[ ] This change requires a documentation update
[x] Documentation fix/enhancement

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[x] I have checked that this change does not generate any credentials and that they are NOT accidentally logged anywhere.
[ ] I have added tests that prove my fix is effective or that my feature works per HashiCorp requirements
[ ] I have added any necessary documentation (if appropriate)
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