docs(fix): enhance executor explanation in minting guide (#739)

Author: fassko

docs/fassets/developer-guides/6-fassets-minting-executor.mdx

@@ -19,9 +19,15 @@ This guide walks you through the complete process of minting FAssets (e.g., FXRP
 
 Minting FAssets is the process of wrapping, for instance, XRP from the XRP Ledger into an FAsset, enabling it to be used within the Flare blockchain ecosystem.
 
-The minting process can be executed by an external actor that monitors pending requests.
-Executors are incentivized but have no special permissions.
-If they fail to execute in time, the request expires, and minting must be restarted.
+:::info
+
+Executors are external actors that monitor pending minting requests and execute them by submitting payment proofs on-chain.
+They are incentivized for this task but have no special permissions—anyone can act as an executor.
+If no one executes in time, the minting request expires, and the process must be restarted.
+
+An executor can be a wallet or a DApp platform that facilitates minting and helps users automate the flow.
+
+:::
 
 See the [Minting](/fassets/minting) overview for more details.