Add descriptions for tasks

Add description metadata for each task section (English localization).
For sections that only have one page, make sure that that sole page has
description metadata set.

This change helps prepare for the migration to the Docsy theme.

content/en/docs/tasks/manage-hugepages/scheduling-hugepages.md

@@ -3,16 +3,14 @@ reviewers:
 - derekwaynecarr
 title: Manage HugePages
 content_type: task
+description: Configure and manage huge pages as a schedulable resource in a cluster.
 ---
 
 <!-- overview -->
 {{< feature-state state="stable" >}}
 
 Kubernetes supports the allocation and consumption of pre-allocated huge pages
-by applications in a Pod as a **GA** feature. This page describes how users
-can consume huge pages and the current limitations.
-
-
+by applications in a Pod. This page describes how users can consume huge pages.
 
 ## {{% heading "prerequisites" %}}
 
@@ -125,6 +123,3 @@ term_id="kube-apiserver" >}} (`--feature-gates=HugePageStorageMediumSize=true`).
 
 - NUMA locality guarantees as a feature of quality of service.
 - LimitRange support.
-
-
-