Fixup upgrades

Author: erikjohnston

docs/upgrade.md

@@ -91,14 +91,14 @@ process, for example:
 
 # Upgrading to v1.61.0
 
-## Removal of depracated community/groups
+## Removal of deprecated community/groups
 
 This release of Synapse will remove deprecated community/groups from codebase.
 
 ### Worker endpoints
 
-For those who have deployed workers, following worker endpoints will no longer be existing
-and they are expected to be removed from reverse proxy config:
+For those who have deployed workers, following worker endpoints will no longer
+exist and they can be removed from the reverse proxy configuration:
 
 -   `^/_matrix/federation/v1/get_groups_publicised$`
 -   `^/_matrix/client/(r0|v3|unstable)/joined_groups$`