Update draft-ietf-quic-multipath.md

Co-authored-by: Kazuho Oku <[email protected]>

draft-ietf-quic-multipath.md

@@ -547,7 +547,7 @@ guarantee that packets will actually reach the peer, with an exception
 of the ACK_MP frame. An endhost MAY bundle the ACK_MP frame with the
 PATH_RESPONSE frame; in this case it is RECOMMANDED to consider
 the acknowledgement information as opportunistic and repeat
-the acknowledged pacjet ranges in the next ACK_MP frame.
+the acknowledged packet ranges in the next ACK_MP frame.
 Alternatively ACK_MP frames can be sent any other active path.
 
 The endhost can use all the paths in the "Active" state, provided