Improve the documentation for the ManagedBookmarks policy.

components/policy/resources/policy_templates.json

 {
 # policy_templates.json - Metafile for policy templates
 #
 # The content of this file is evaluated as a Python expression.
 #
 # This file is used as input to generate the following policy templates:
 # ADM, ADMX+ADML, MCX/plist and html documentation.
 #
 # Policy templates are user interface definitions or documents about the
 # policies that can be used to configure Chrome. Each policy is a name-value
@@ skipping 6503 matching lines @@
         'dynamic_refresh': True,
         'per_profile': True,
       },
       'example_value': [
         {
           "name": "Google",
           "url": "google.com"
         }, {
           "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',
       'type': 'main',
       'schema': { 'type': 'boolean' },
       'supported_on': ['android:31-'],
       'features': {
         'dynamic_refresh': True,
         'per_profile': True,
       },
@@ skipping 286 matching lines @@
         'dynamic_refresh': True,
         'per_profile': False,
       },
       'example_value': 'ssl3',
       'id': 279,
       'caption': '''Minimum SSL version enabled''',
       'desc': '''If this policy is not configured then <ph name="PRODUCT_NAME">$1<ex>Google Chrome</ex></ph> will use a default minimum version, which is SSLv3 in Chrome 39 but may be TLS 1.0 in Chrome 40.
 
       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',
       'type': 'string-enum',
       'schema': {
         'type': 'string',
         'enum': [
           'ssl3',
           'tls1',
           'tls1.1',
@@ skipping 162 matching lines @@
       'desc': '''Text appended in parentheses next to the policies top-level container to indicate that those policies are of the Recommended level''',
       'text': 'Default Settings (users can override)',
     },
     'doc_complex_policies_on_windows': {
       'desc': '''Text pointing the user to a help article for complex policies on Windows''',
       'text': '''encoded as a JSON string, for details see <ph name="COMPLEX_POLICIES_URL">http://www.chromium.org/administrators/complex-policies-on-windows<ex>http://www.chromium.org/administrators/complex-policies-on-windows</ex></ph>''',
     },
   },
   'placeholders': [],
 }