Fixed typos (#2721)

- Typo in first bullet point
- Fixed capitalization in "Changing Reclaim Policy of a PersistentVolume" bullet point

docs/tasks/index.md

@@ -53,7 +53,7 @@ single thing, typically by giving a short sequence of steps.
 * [Assigning Pods to Nodes](/docs/tasks/administer-cluster/assign-pods-nodes/)
 * [Autoscaling the DNS Service in a Cluster](/docs/tasks/administer-cluster/dns-horizontal-autoscaling/)
 * [Safely Draining a Node while Respecting Application SLOs](/docs/tasks/administer-cluster/safely-drain-node/)
-* [Changing reclaim policy of a PersistentVolume](/docs/tasks/administer-cluster/change-pv-reclaim-policy/)
+* [Changing Reclaim Policy of a PersistentVolume](/docs/tasks/administer-cluster/change-pv-reclaim-policy/)
 
 #### Managing Stateful Applications