Changes osmo.md to osmo.mdx, add FEE token DAO link

 - Adds Fee Token Whitelist Controller DAO
 - Changes page format from md >> mdx to enable enhanced markdown

docs/overview/educate/osmo.md → docs/overview/educate/osmo.mdx

@@ -14,6 +14,13 @@ The pools eligible for liquidity rewards are selected by OSMO governance partici
 Transaction fees are paid by any user to post a transaction on the chain. The fee amount is determined by the computation and storage costs of the transaction. Minimum gas costs are determined by the proposer of a block in which the transaction is included. This transaction fee is distributed to OSMO stakers on the network.
 Validators can choose which assets to accept for fees in the blocks that they propose, but all accepted assets are converted to OSMO before distribution.
 
+:::info
+
+The list of tokens accepted for tx fees is **permissionless**. Head to the [Fee Token Whitelist Controller DAO](https://daodao.zone/dao/osmo17eqe9dpglajwd48r65lasq3mftra5q4uxce525htyvjdp0q037vqpurhve/proposals).  
+_the token must have reasonable liquidity, paired with $OSMO as a minimum requirement_
+
+:::
+
 ## ProtoRev
 The ProtoRev module mints and burns the OSMO token in order to perform privileged arbitrage transactions on chain to ensure prices are balanced across liquidity sources on chain.
 No use for this revenue has currently been decided, but will be allocated by governance in the future.