Typo on message passing between L2-L1 in Messenger spec

[miguelmtzinf]

I think the second and third sentences of this paragraph is incorrect.

specs/specs/protocol/messengers.md

Lines 73 to 80 in 8efc7a3

	The user experience when sending from L1 to L2 is a bit different than when
	sending a transaction from L2 to L1. When going into L1 from L2, the user does
	not need to call `relayMessage` on L2 themselves. The user pays for L2 gas on L1
	and the transaction is automatically pulled into L2 where it is executed on L2.
	When going from L2 into L1, the user proves their withdrawal on OptimismPortal,
	then waits for the finalization window to pass, and then finalizes the withdrawal
	on the OptimismPortal, which calls `relayMessage` on the
	`L1CrossDomainMessenger` to finalize the withdrawal.

It should read:

When going into L2 from L1, the user does not need to call relayMessage on L1 themselves. The user pays for L1 gas on L2 and the transaction is automatically pulled into L1 where it is executed on L2.