Settings Rewrite: Update comments on related to routing.

chrome/browser/resources/settings/settings_page/settings_section.js

Index: chrome/browser/resources/settings/settings_page/settings_section.js
diff --git a/chrome/browser/resources/settings/settings_page/settings_section.js b/chrome/browser/resources/settings/settings_page/settings_section.js
index fd8da6df3bd5265ee85e28c25759d6dde9e770ac..7a39fd72ac12586f67a92c428f37ec8940ba9bd8 100644
--- a/chrome/browser/resources/settings/settings_page/settings_section.js
+++ b/chrome/browser/resources/settings/settings_page/settings_section.js
@@ -9,7 +9,7 @@
  *
  * Example:
  *
- *    <settings-section page-title="[[pageTitle]]">
+ *    <settings-section page-title="[[pageTitle]]" section="privacy">
  *      <!-- Insert your section controls here -->
  *    </settings-section>
  *
@@ -35,6 +35,8 @@ Polymer({
     /**
      * The section is expanded to a full-page view when this property matches
      * currentRoute.section.
+     *
+     * The section name must match the name specified in settings_router.js.
      */
     section: {
       type: String,