making figures consistent in the blobstream intro

[staheri14]

In the intro to blobstream, two figures are supplied one as the continuation of the other i.e.,

https://docs.celestia.org/img/blobstream/blobstream-orchestrator.png

and

https://docs.celestia.org/img/blobstream/blobstream-relayer.png

The first image illustrates that attestations are coming from the celestia validator node, while in the second figure the source of attestations changes to the celestia app consensus node. If this discrepancy is not intentional, then it is worth updating the figures to make them consistent.

[staheri14]

A minor side note: there is also a discrepancy in coloring between the validator node and the Celestia app consensus node in the two figures. They could become consistent in terms of color as well.

[jcstein]

thank you for this issue! i plan to remove these older diagrams in favor of the newer version in the top of the overview section and also reworking the intro pages (https://docs.celestia.org/developers/blobstream & https://docs.celestia.org/nodes/blobstream-intro) based on this from github. i'll also find a home for the diagrams from succint that are still a WIP and will be added after the first revision of blobstream docs