Fixed "characters" typo in message validation when input length is 1

content/app/strings/content_strings.grd

 <?xml version="1.0" encoding="UTF-8"?>
 
 <!-- This file contains definitions of resources that will be translated for
 each locale. Specifically, these are UI strings that are used by content that
 need to be translated for each locale.-->
 
 <!-- Some of these strings and string descriptions were taken from
 WebKit/win/WebCoreLocalizedStrings.cpp so we include the original license
 below:
 
@@ skipping 814 matching lines @@
       </message>
       <message name="IDS_FORM_VALIDATION_STEP_MISMATCH" desc="Heading or short sentence shown when a form control value in a webpage should be aligned to a step value specified by the page author, but a user speficified non-aligned value. e.g. A number type field, minimum value is 0, and step value is 4. If A user-specified value is not a multiple of 4, this warning message is shown.">
         Please enter a valid value. The two nearest valid values are <ph name="VALID_VALUE_LOW">$1<ex>4</ex></ph> and <ph name="VALID_VALUE_HIGHER">$2<ex>8</ex></ph>.
       </message>
       <message name="IDS_FORM_VALIDATION_STEP_MISMATCH_CLOSE_TO_LIMIT" desc="Heading or short sentence shown when a form control value in a webpage should be aligned to a step value specified by the page author, but a user speficified non-aligned value. e.g. A number type field, minimum value is 0, and step value is 4. If A user-specified value is not a multiple of 4, this warning message is shown.">
         Please enter a valid value. The nearest valid value is <ph name="VALID_VALUE">$1<ex>0</ex></ph>.
       </message>
       <message name="IDS_FORM_VALIDATION_TOO_LONG" desc="Heading or short sentence shown when a form control in a webpage needs to be shorter than a length specified by the page author, but a user specified long value.">
         Please shorten this text to <ph name="MAX_CHARACTERS">$2<ex>100</ex></ph> characters or less (you are currently using <ph name="CURRENT_LENGTH">$1<ex>101</ex></ph> characters).
       </message>
-      <message name="IDS_FORM_VALIDATION_TOO_SHORT" desc="Heading or short sentence shown when a form control in a webpage needs to be longer than a length specified by the page author, but a user specified short value.">
+      <message name="IDS_FORM_VALIDATION_TOO_SHORT" desc="Heading or short sentence shown when a form control in a webpage needs to be longer than a length specified by the page author, but a user specified a value of 1 character.">
+        Please lengthen this text to <ph name="MIN_CHARACTERS">$2<ex>101</ex></ph> characters or more (you are currently using 1 character).
+      </message>
+      <message name="IDS_FORM_VALIDATION_TOO_SHORT_PLURAL" desc="Heading or short sentence shown when a form control in a webpage needs to be longer than a length specified by the page author, but a user specified short value.">
         Please lengthen this text to <ph name="MIN_CHARACTERS">$2<ex>101</ex></ph> characters or more (you are currently using <ph name="CURRENT_LENGTH">$1<ex>100</ex></ph> characters).
       </message>
 
       <message name="IDS_MEDIA_OVERFLOW_MENU_CLOSED_CAPTIONS" desc="Media controls overflow menu item label for a closed captions button. The text for this overflow menu should be short.">
         Captions
       </message>
       <message name="IDS_MEDIA_OVERFLOW_MENU_CAST" desc="Media controls overflow menu item label for a cast button.">
         Cast
       </message>
       <message name="IDS_MEDIA_OVERFLOW_MENU_ENTER_FULLSCREEN" desc="Media controls overflow menu item label for a button to enter fullscreen.">
@@ skipping 28 matching lines @@
         Off
       </message>
 
       <message name="IDS_PLUGIN_INITIALIZATION_ERROR" desc="A message displayed when a plugin failed to load">
         Couldn't load plugin.
       </message>
 
     </messages>
   </release>
 </grit>