Update links to use Weight Explorer now at gs://distill-circuits/

[csvoss]

This is PR 3 in a series of 3. The others are:

• 1: https://github.com/distillpub/post--circuits-early-overview/pull/7
• 2: https://github.com/distillpub/post--circuits-zoom-in/pull/14

Soon, Weight Explorer will no longer be at https://storage.googleapis.com/inceptionv1-weight-explorer as we are losing that cluster. We have migrated it to https://storage.googleapis.com/distill-circuits/inceptionv1-weight-explorer, at the new bucket gs://distill-circuits, instead.

This PR updates all relevant storage.googleapis.com links via a mass find-and-replace.