Fix typo in values.yaml

[pyxelr]

What this PR does / why we need it:

Fix typo in charts/datadog/values.yaml.

Special notes for your reviewer:

I also triggered the helm-docs.sh script, but it did not update any README file

❯ .github/helm-docs.sh 

INFO[2025-01-31T13:33:29+01:00] Found Chart directories [charts/datadog, charts/datadog-crds, charts/datadog-operator, charts/extended-daemon-set, charts/observability-pipelines-worker, charts/private-action-runner, charts/synthetics-private-location] 
INFO[2025-01-31T13:33:29+01:00] Generating README Documentation for chart charts/observability-pipelines-worker 
INFO[2025-01-31T13:33:29+01:00] Generating README Documentation for chart charts/datadog 
INFO[2025-01-31T13:33:29+01:00] Generating README Documentation for chart charts/datadog-operator 
INFO[2025-01-31T13:33:29+01:00] Generating README Documentation for chart charts/private-action-runner 
INFO[2025-01-31T13:33:29+01:00] Generating README Documentation for chart charts/datadog-crds 
INFO[2025-01-31T13:33:29+01:00] Generating README Documentation for chart charts/extended-daemon-set 
INFO[2025-01-31T13:33:29+01:00] Generating README Documentation for chart charts/synthetics-private-location 

Checklist

[Place an '[x]' (no spaces) in all applicable fields. Please remove unrelated fields.]

• Chart Version bumped
• Documentation has been updated with helm-docs (run: .github/helm-docs.sh)
• CHANGELOG.md has been updated
• Variables are documented in the README.md
• For Datadog Operator chart or value changes update the test baselines (run: make update-test-baselines)