Renaming "Sections" to "Section" to fix linter

Author: bszyman

16/umbraco-cms/SUMMARY.md

@@ -175,7 +175,7 @@
         * [Modal Route Registration](customizing/extending-overview/extension-types/modals/route-registration.md)
     * [Property Value Preset](customizing/extending-overview/extension-types/property-value-preset.md)
     * [Sections](customizing/extending-overview/extension-types/sections/README.md)
-      * [Sections](customizing/extending-overview/extension-types/sections/section.md)
+      * [Section](customizing/extending-overview/extension-types/sections/section.md)
       * [Section Sidebar](customizing/extending-overview/extension-types/sections/section-sidebar.md)
       * [Section View](customizing/extending-overview/extension-types/sections/section-view.md)
     * [Trees](customizing/extending-overview/extension-types/tree.md)

16/umbraco-cms/customizing/extending-overview/extension-types/sections/section.md

@@ -2,7 +2,7 @@
 description: A guide to creating a section
 ---
 
-# Sections
+# Section
 
 {% hint style="warning" %}
 This page is a work in progress and may undergo further revisions, updates, or amendments. The information contained herein is subject to change without notice.