Possible typo in Ch 14

[brentgracey]

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https://github.com/fastai/fastbook/blob/master/14_resnet.ipynb

the number of filters in and out is 4 times higher (256 instead of 64) diminish then restore the number of channels (hence the name bottleneck)

The word diminish after the first brackets doesn't seem correct. Perhaps I need to read through the chapter a few more times; or perhaps its a typo.

This paragraph also switches between the terms filter and channel. I'm not sure if the one use of channel is highlighting something specific; or if it could be easier to read if it only used the term filter?