Document internal APIs and Application Services component (#499)
Document internal APIs and Application Services component (#499)

* Document internal APIs, app services in WIRING.md

* Add application services component to WIRING diagram

* Fix typo and clarify what mode internal APIs use HTTP

matrix-org/dendrite,matrix-org/dendrite,gperdomor/dendrite,matrix-org/dendrite,gperdomor/dendrite,matrix-org/dendrite