Update docs/how-arbitrum-works/partials/_retryable-tickets-partial.mdx

Author: anegg0

docs/how-arbitrum-works/partials/_retryable-tickets-partial.mdx

@@ -22,7 +22,7 @@ If auto-redemption succeeds, the ticket executes immediately with the original p
 
 If automatic redemption fails, anyone can manually redeem the ticket by calling the `ArbRetryableTx` precompile's `redeem` method. The manual redemption attempt donates its call gas to the execution, and the gas limit is not constrained by the original ticket parameters. This allows tickets to be retried with different gas conditions.
 
-Tickets remain in the retryable buffer for one week. If not successfully redeemed within this period, the ticket expires and is automatically discarded. However, tickets can be kept alive indefinitely by paying a fee to extend the lifetime for another full period before expiration.
+Tickets remain in the retryable buffer for one week. If not successfully redeemed within this period, the ticket expires and is automatically discarded. However, tickets can be kept alive indefinitely by paying a fee to extend their lifetime for another full period before expiration.
 
 If a ticket expires without successful redemption, the escrowed `callValue` is refunded to the `callValueRefundAddress` specified during submission. This protects user funds even if execution never succeeds.