docs(fassets): update proof validity period from 24 hours to 14 days in minting and redemption sections

Author: fassko

docs/fassets/2-minting.mdx

@@ -189,8 +189,8 @@ FAssets are still transferred to the minter's account, and the agent's collatera
 
 ### Expired proof
 
-Proofs provided by the Flare Data Connector are available for only 24 hours, approximately.
-If neither the minter nor the agent presents the proof of payment or nonpayment within 24 hours, the regular minting process cannot continue, and the agent's collateral could be locked indefinitely.
+Proofs provided by the [Flare Data Connector](/fdc/overview) can be created for 14 days and remain valid indefinitely once created.
+Suppose neither the minter nor the agent presents the proof of payment or nonpayment within the 14-day window. In that case, the regular minting process cannot continue, and the agent's collateral could be locked indefinitely.
 
 In this case, the agent can still recover the collateral by buying it back with native tokens.
 The recovery is accomplished with the following procedure:

docs/fassets/3-redemption.mdx

@@ -107,8 +107,8 @@ After enough time for the agent to present the proof has elapsed, anyone, includ
 
 ### Expired proof
 
-Proofs provided by the Flare Data Connector are available for approximately 24 hours.
-If neither the redeemer, the agent, nor the executor presents the proof of payment or payment non-existence within 24 hours, the regular redemption process cannot continue, and the agent's collateral could be locked indefinitely.
+Proofs provided by the [Flare Data Connector](/fdc/overview) can be created for 14 days and remain valid indefinitely once created.
+If neither the redeemer, the agent, nor the executor presents proof of payment or evidence of non-payment within the 14-day window, the regular redemption process cannot continue, and the agent's collateral could be locked indefinitely.
 
 The procedure to recover this collateral is the same as the procedure in the minting case.