(#8065) - Update replication.md
(#8065) - Update replication.md

* Update replication.md

Clarify CAP theorem.  P does not mean it supports partitioning (which sounds like shards the way it was described) But that it is tolerant to node partitions (network outages between nodes while both nodes are online, etc.).

* Update replication.md
pouchdb/pouchdb,pouchdb/pouchdb,pouchdb/pouchdb