The current description reads like each external gateway, B1 & B2, should have three connections from the local cluster because the local cluster has three gateway nodes. However, my understanding is that the external gateway _cluster_ will have three connections from the local cluster.
Added cluster at the end of sentence and clarified there will be three outbound connections from the local cluster.
* Typos in prose
* Typo fix in copy/paste (dropped a letter)
* markup fix: keep list within quoted text
* Auto-corrupt cleanup: Jason to JSON
* gateway: multiple typos and language nits
* monitoring: add missing leafz, fix subsz spelling