Suggested changelog description texts from review

Co-authored-by: Ulrich Petri <[email protected]>

Author: karlb

docs/changelog.rst

@@ -11,8 +11,8 @@ Changelog
 
 * :release:`1.2.0 <2020-11-06>`
 * :feature:`6646` add [Matrix toDevice](https://matrix.org/docs/spec/client_server/r0.6.0#id70) message support in transport layer
-* :feature:`6608` Compatibility with synapse 1.19 and [MSC2432](https://github.com/matrix-org/matrix-doc/pull/2432)
-* :feature:`6482` Add support for capabilities. The Raiden client can show its capababilities to other clients via its matrix profile.
+* :feature:`6608` Compatibility with Synapse >= 1.12 and [MSC2432](https://github.com/matrix-org/matrix-doc/pull/2432)
+* :feature:`6482` Add support for client capabilities. Raiden clients can now negotiate supported features via their matrix profile.
 * :bug:`6444` Fix a race condition when processing blockchain events.
 
 * :release:`1.1.1 <2020-07-20>`