fix typo

[JulienOrain]

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What does this PR aim to accomplish?:
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fix typo

How does this PR accomplish the above?:
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What documentation changes (if any) are needed to support this PR?:
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[dschaper]

Thanks!

[StackNeverFlow]

These changes are approved

[JulienOrain]

up

[pralor-bot]

This pull request has been mentioned on Pi-hole Userspace. There might be relevant details there:

https://discourse.pi-hole.net/t/pi-hole-5-1-released/35577/1