typo

docs/learn/asc/on-blockchain.mdx

@@ -14,7 +14,7 @@ For instance, they can be programmed to trigger specific calls when predefined e
 ![Autonomous SCs](./autonomous-sc.webp)
 
 Standard operations are sent to an *operation pool* and are executed when they are included in a block. The cost of
-execution is payed by the sender of the operation when the operation is executed.
+execution is paid by the sender of the operation when the operation is executed.
 
 Autonomous smart contracts works by emitting messages which will schedule the execution. Those messages are emitted
 by smart contracts, through operations sent by users or by autonomous operations. Messages are then stored in an