kube-slack/ignore-pod annotation does not work if you set an empty string as value.

[SimonHessel]

Hi,
I installed kube-slack via the helm chart and tried to use the kube-slack/ignore-pod annotation. Sadly the pods were not ignored, because Javascript returns false if you test for an empty string
if(annotations['kube-slack/ignore-pod'])

Would it be possible to either change this to
if (typeof annotations['kube-slack/ignore-pod'] !== 'undefined')

or update the documentation to specify that you have to add a value.
Maybe I am the only one who got this wrong.
Thanks