Update broken link
Update broken link

This Goodbits link has a different pattern than https://the-emberjs-times.ongoodbits.com/2018/07/06/the-ember-times-issue-54 or https://the-emberjs-times.ongoodbits.com/2018/06/29/the-ember-times-issue-53. Should we fix here or on Goodbits?
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