Adds jump_to_details message string

Test: ChromeVox menus (Search+.) works again. It was breaking the page due to this missing message id.
Cq-Include-Trybots: luci.chromium.try:closure_compilation
Change-Id: Id2a5539d29d46343472829b5e4b5d8deefe06e94
Reviewed-on: https://chromium-review.googlesource.com/1107165Reviewed-by: Dominic Mazzoni <dmazzoni@chromium.org>
Commit-Queue: David Tseng <dtseng@chromium.org>
Cr-Commit-Position: refs/heads/master@{#569398}

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

@@ -2963,6 +2963,9 @@ If you're done with the tutorial, use ChromeVox to navigate to the Close button
       <message desc="A hint to the user that there are details associated with this element." name="IDS_CHROMEVOX_HINT_DETAILS">
         Press Search+A, J to jump to details.
       </message>
+      <message desc="The display name of the command that will jump to more details about an item." name="IDS_CHROMEVOX_JUMP_TO_DETAILS">
+        Jump to Details
+      </message>
       <message desc="Describes the action of decrementing a control." name="IDS_CHROMEVOX_ACTION_DECREMENT_DESCRIPTION">
         Decrease value
       </message>