Fix typo in policy_templates.json

chrome/app/policy/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 4178 matching lines @@
           'type': 'int',
           'schema': { 'type': 'integer' },
           'supported_on': ['chrome_os:26-'],
           'features': {
             'dynamic_refresh': True,
             'per_profile': False,
           },
           'example_value': 200,
           'id': 184,
           'caption': '''Percentage by which to scale the idle delay in presentation mode''',
-          'desc': '''Specifies the percentage by which the idle delay is scaled when the device is in presentation node.
+          'desc': '''Specifies the percentage by which the idle delay is scaled when the device is in presentation mode.
 
           If this policy is set, it specifies the percentage by which the idle delay is scaled when the device is in presentation mode. When the idle delay is scaled, the screen dimming, screen off and screen lock delays get adjusted to maintain the same distances from the idle delay as originally configured.
 
           If this policy is unset, a default scale factor is used.
 
           The scale factor must be 100% or more. Values that would make the idle delay in presentation mode shorter than the regular idle delay are not allowed.''',
         },
       ],
     },
     {
@@ skipping 129 matching lines @@
       'desc': '''Text appended in parentheses to the policy name to indicate that it has been deprecated''',
       'text': 'deprecated',
     },
     'doc_recommended': {
       '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)',
     },
   },
   'placeholders': [],
 }