Clarify cancellation format (#598)

Author: sketsdever

docs/flashbots-protect/cancellations.md

@@ -8,7 +8,7 @@ Flashbots Protect provides the functionality to cancel pending transactions. To
 
 - It must be submitted from the **same address** as the original transaction that is intended to be cancelled.
 - It should have the **same nonce** as the original transaction.
-- The **from and to addresses** should match those of the original transaction.
+- The **from and to addresses** should both be set to the **from address** of the original transaction.
 - The **data field** of the cancellation transaction should be left empty.
 
 ## No cost to cancel