Enable md/html room topic in Matrix
MSC (not merged yet) -> https://github.com/matrix-org/matrix-spec-proposals/pull/3765
looks like it can be activated in element -> https://github.com/vector-im/element-web/pull/21671/files
MSC (not merged yet) -> https://github.com/matrix-org/matrix-spec-proposals/pull/3765
looks like it can be activated in element -> https://github.com/vector-im/element-web/pull/21671/files