types: fix contract arg of runUpdateRewardsLoop (#478)

The functions accepts a list of Ethers Contract instances.

Signed-off-by: Miroslav Bajtoš <oss@bajtos.net>

lib/rewards.js

@@ -2,7 +2,7 @@ import timers from 'node:timers/promises'
 
 /**
  * @param {object} args
- * @param {string[]} args.contracts
+ * @param {import('ethers').Contract[]} args.contracts
  * @param {string} args.ethAddress
  * @param {(m: Partial<import('./metrics.js').MetricsEvent>) => void} args.onMetrics
  */