Fix documentation for chip-app1 commisioning. (#22332)
Fix documentation for chip-app1 commisioning. (#22332)

* Fix documentation for chip-app1 commisioning.

PR #15801 changed the port to 5543, but the documentation was not updated. Just
use "pairing code" to avoid problems like that.

Fixes https://github.com/project-chip/connectedhomeip/issues/22312

* Fix review comments: add missing node id.
project-chip/connectedhomeip,project-chip/connectedhomeip,project-chip/connectedhomeip,project-chip/connectedhomeip,project-chip/connectedhomeip,project-chip/connectedhomeip