Fix string description.

ios/chrome/app/strings/ios_strings.grd

 <?xml version="1.0" encoding="UTF-8"?>
 
 <!--
 This file contains definition of resources that will be translated for each
 locale.  The strings in this file are specific to iOS.
 -->
 
 <grit base_dir="." latest_public_release="0" current_release="1"
       output_all_resource_defines="false" source_lang_id="en" enc_check="möl">
   <outputs>
@@ skipping 1059 matching lines @@
       </message>
       <message name="IDS_IOS_READING_LIST_EDIT_BUTTON" desc="Label of the button to edit the reading list entries (delete, mark as read/unread) [Length: 20em]" meaning="Start editing the reading list entries. [Length: 20em]">
         Edit
       </message>
       <message name="IDS_IOS_READING_LIST_EMPTY_MESSAGE_IPHONE" desc="Message to explain to the user how to add entries to the reading list" meaning="[Length: unlimited]">
         To add a page to your reading list, tap <ph name="BEGIN_BOLD_FONT">BEGIN_BOLD_FONT</ph>Menu > Share > Read Later<ph name="END_BOLD_FONT">END_BOLD_FONT</ph>.
       </message>
       <message name="IDS_IOS_READING_LIST_EMPTY_MESSAGE_IPAD" desc="Message to explain to the user how to add entries to the reading list" meaning="[Length: unlimited]">
         To add a page to your reading list, tap <ph name="BEGIN_BOLD_FONT">BEGIN_BOLD_FONT</ph>Share > Read Later<ph name="END_BOLD_FONT">END_BOLD_FONT</ph>.
       </message>
-      <message name="IDS_IOS_READING_LIST_EMPTY_OFFLINE" desc="Message to explain to the user that the pages added to the reading list can we read offline." meaning="[Length:unlimited]">
+      <message name="IDS_IOS_READING_LIST_EMPTY_OFFLINE" desc="Message to explain to the user that the pages added to the reading list can be read offline." meaning="[Length:unlimited]">
         Your reading list is available offline.
       </message>
       <message name="IDS_IOS_READING_LIST_MARK_ALL_BUTTON" desc="Label of the button to suggest options to mark all reading list entries read or unread [Length: 25em]" meaning="Display options letting the user mark all the entries as read or as unread. [Length: 25em]">
         Mark All…
       </message>
       <message name="IDS_IOS_READING_LIST_MARK_ALL_READ_ACTION" desc="Label of the action button to mark all reading list entries as read. [Length: 25em]" meaning="Mark all entries as read. [Length: 25em]">
         Mark All Read
       </message>
       <message name="IDS_IOS_READING_LIST_MARK_ALL_UNREAD_ACTION" desc="Label of the action button to mark all reading list entries as unread. [Length: 25em]" meaning="Mark all entries as unread. [Length: 25em]">
         Mark All Unread
@@ skipping 448 matching lines @@
       </message>
       <message name="IDS_IOS_VOICE_SEARCH_SETTING_TITLE" desc="The title for Voice Search setting [Length: 29em] [iOS only]">
         Voice Search
       </message>
       <message name="IDS_IOS_VOICE_SEARCH_SETTING_TTS" desc="The label for setting switch enabling text-to-speech response after voice search [Length: 29em] [iOS only]">
         Speak Answers Back
       </message>
     </messages>
   </release>
 </grit>