updated smaller collections for manual

collections/farming/farming_toc.md

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+# Farming
+
+This section covers the essential information concerning ThreeFold Farming.
+
+To farm on the ThreeFold Grid, refer to the [Farmers](../../documentation/farmers/farmers.md) section.
+
+<h2>Table of Contents</h2>
+
+- [Farming Rewards](./farming_reward.md)
+- [Proof-of-Capacity](./proof_of_capacity.md)
+- [Proof-of-Utilization](./proof_of_utilization.md)
+- [PoC DAO Rules](./poc_dao_rules.md)