ChromeVox: Update language switching setting string.

Bug: 923068
Change-Id: I4aab963244f8e84c5fb749794587d60a64a083f2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1747975Reviewed-by: Alice Boxhall <aboxhall@chromium.org>
Commit-Queue: Akihiro Ota <akihiroota@chromium.org>
Cr-Commit-Position: refs/heads/master@{#687343}

chrome/browser/resources/chromeos/chromevox/chromevox/background/options.html

@@ -92,7 +92,7 @@
            class="checkbox pref" name="languageSwitching">
     <label for="languageSwitching" class="i18n"
            msgid="options_lang_switching_checkbox_label">
-      Automatically detect and switch ChromeVox language.
+      Automatically switch ChromeVox voice based on language.
     </label>
   </div>
 

chrome/browser/resources/chromeos/chromevox/strings/chromevox_strings.grd

@@ -3221,7 +3221,7 @@ If you're done with the tutorial, use ChromeVox to navigate to the Close button
       </message>
       <message desc="The text label for ChromeVox language switching checkbox."
         name="IDS_CHROMEVOX_OPTIONS_LANG_SWITCHING_CHECKBOX_LABEL">
-        Automatically detect and switch ChromeVox language.
+        Automatically switch ChromeVox voice based on language.
       </message>
       <message desc="Spoken to describe all rich text attributes of a node." name="IDS_CHROMEVOX_RICH_TEXT_ATTRIBUTES">
         Text formatting.