fix grammar and typos

1 files changed, 1 insertions, 1 deletions

diff --git a/40.md b/40.md
index 274ee80..32680db 100644
--- a/40.md
+++ b/40.md
@@ -43,7 +43,7 @@ Clients SHOULD ignore events that have expired.
 Relay Behavior
 --------------
 
-Relays MAY NOT delete an expired message immediately on expiration and MAY persist them indefinitely.  
+Relays MAY NOT delete expired messages immediately on expiration and MAY persist them indefinitely.  
 Relays SHOULD NOT send expired events to clients, even if they are stored.  
 Relays SHOULD drop any events that are published to them if they are expired.  
 An expiration timestamp does not affect storage of ephemeral events.