Fix typo in room versions 1 through 5 (#2066)

Signed-off-by: Kévin Commaille <zecakeh@tedomum.fr>

changelogs/room_versions/newsfragments/2066.clarification

@@ -0,0 +1 @@
+Fix various typos throughout the specification.

content/rooms/fragments/v1-auth-rules.md

@@ -39,7 +39,7 @@ The rules are as follows:
    does not match the `sender` domain of the create event, reject.
 4.  If type is `m.room.aliases`:
     1.  If event has no `state_key`, reject.
-    2.  If sender's domain doesn't matches `state_key`, reject.
+    2.  If sender's domain doesn't match `state_key`, reject.
     3.  Otherwise, allow.
 5.  If type is `m.room.member`:
     1.  If there is no `state_key` property, or no `membership` property in

content/rooms/fragments/v3-auth-rules.md

@@ -47,7 +47,7 @@ The complete list of rules, as of room version 3, is as follows:
    does not match the `sender` domain of the create event, reject.
 4.  If type is `m.room.aliases`:
     1.  If event has no `state_key`, reject.
-    2.  If sender's domain doesn't matches `state_key`, reject.
+    2.  If sender's domain doesn't match `state_key`, reject.
     3.  Otherwise, allow.
 5.  If type is `m.room.member`:
     1.  If there is no `state_key` property, or no `membership` property in