Improve the documentation for the ManagedBookmarks policy.

components/policy/resources/policy_templates.json

Index: components/policy/resources/policy_templates.json
diff --git a/components/policy/resources/policy_templates.json b/components/policy/resources/policy_templates.json
index 86184b5471cc867e30a22048b62af6e8d84810ed..be1e3ba51d7dd1ac9b2b9a4043f7e6ea98ffaf97 100644
--- a/components/policy/resources/policy_templates.json
+++ b/components/policy/resources/policy_templates.json
@@ -6521,21 +6521,27 @@
         }, {
           "name": "Youtube",
           "url": "youtube.com"
+        }, {
+          "name": "Chrome links",
+          "children": [
+            {
+              "name": "Chromium",
+              "url": "chromium.org"
+            },
+            {
+              "name": "Chromium Developers",
+              "url": "dev.chromium.org"
+            }
+          ]
         }
       ],
       'id': 227,
       'caption': '''Managed Bookmarks''',
       'desc': '''Configures a list of managed bookmarks.
 
-      The policy is a list of bookmarks, and each bookmark is a dictionary containing the bookmark "name" and target "url".
+      The policy is a list of bookmarks, and each bookmark is a dictionary containing the bookmark "name" and the target "url". A bookmark can also be configured as a folder. In that case, define the folder "name" but don't define an "url"; instead, define the folder contents as another list of bookmarks under the "children" key. Chrome will amend incomplete URLs as if they were submitted via the Omnibox. For example, "google.com" becomes "http://google.com/".
 
-      A bookmark can also be configured as a folder. In that case, define the folder "name" but don't define an "url"; instead, define the folder contents as another list of bookmarks under the "children" key.
-
-      These bookmarks are placed in a Managed bookmarks folder inside the Mobile bookmarks. These bookmarks can't be modified by the user.
-
-      When this policy is set then the Managed bookmarks are the default folder opened when the bookmarks view is opened in <ph name="PRODUCT_NAME">$1<ex>Google Chrome</ex></ph>.
-
-      Managed bookmarks are not synced to the user account.''',
+      These bookmarks are placed in a Managed bookmarks folder that can't be modified by the user. Managed bookmarks are not synced to the user account and can't be modified by extensions.''',
     },
     {
       'name': 'DataCompressionProxyEnabled',
@@ -6842,7 +6848,7 @@
 
       Otherwise it may be set to one of the following values: "sslv3", "tls1", "tls1.1" or "tls1.2". When set, <ph name="PRODUCT_NAME">$1<ex>Google Chrome</ex></ph> will not use SSL/TLS versions less than the specified version. An unrecognized value will be ignored.
 
-      Note that, despite the number, "sslv3" is an earier version than "tls1".''',
+      Note that, despite the number, "sslv3" is an earlier version than "tls1".''',
     },
     {
       'name': 'SSLVersionFallbackMin',