Update proposals/2836-threading.md

Co-authored-by: Matthew Hodgson <matthew@matrix.org>

proposals/2836-threading.md

@@ -1,6 +1,6 @@
 ### MSC2836: Threading
 
-*This MSC supersedes https://github.com/matrix-org/matrix-doc/issues/1198 *
+*This MSC probably supersedes https://github.com/matrix-org/matrix-doc/issues/1198*
 
 Matrix does not have arbitrarily nested threading for events. This is a desirable feature for implementing clones of social
 media websites like Twitter and Reddit. The aim of this MSC is to define the simplest possible API shape to implement threading
@@ -193,4 +193,4 @@ Justifications:
    which the server is unaware of if the sender was on another homeserver. For this reason, we need to contain routing
    information *somewhere* so servers can retrieve the event and continue navigating the thread. As the client and server
    already have the event which contains a relationship to another event inside an unknown room, the simplest option is to
-   also contain the routing information with that relationship.
+   also contain the routing information with that relationship.