<p>A quick <code>grep</code> should another instance of the same typo, so I just added the fix to this PR as well.</p>
<p>Btw: As setting the channel manually didn't work before, is it actually required? Or is it just an example to show how this could be done? If the latter is true, maybe the configuration task force should give it a look once any results are merged to RIOT.</p>

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