Fixups to new push stream (#17038)

Follow on from #17037

docs/workers.md

@@ -532,12 +532,12 @@ the stream writer for the `presence` stream:
 
     ^/_matrix/client/(api/v1|r0|v3|unstable)/presence/
 
-##### The `push` stream
+##### The `push_rules` stream
 
 The following endpoints should be routed directly to the worker configured as
 the stream writer for the `push` stream:
 
-    ^/_matrix/client/(api/v1|r0|v3|unstable)/push_rules/
+    ^/_matrix/client/(api/v1|r0|v3|unstable)/pushrules/
 
 #### Restrict outbound federation traffic to a specific set of workers