scanning: Update string for color mode label

Update the string for the color mode dropdown label to match the UI
spec.

Bug: 1059779
Change-Id: Ia5d2e97e12b7913387e7400fe4816bef8a2802bc
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2522900
Auto-Submit: Jesse Schettler <jschettler@chromium.org>
Reviewed-by: Zentaro Kavanagh <zentaro@chromium.org>
Commit-Queue: Jesse Schettler <jschettler@chromium.org>
Cr-Commit-Position: refs/heads/master@{#825080}

chromeos/chromeos_strings.grd

@@ -487,7 +487,7 @@ Try tapping the mic to ask me anything.
         PNG
       </message>
       <message name="IDS_SCANNING_APP_COLOR_MODE_DROPDOWN_LABEL" desc="The label for the dropdown that displays available color modes (e.g. color, grayscale, black and white, etc.).">
-        Color mode
+        Color
       </message>
       <message name="IDS_SCANNING_APP_PAGE_SIZE_DROPDOWN_LABEL" desc="The label for the dropdown that displays available page sizes.">
         Page size

chromeos/chromeos_strings_grd/IDS_SCANNING_APP_COLOR_MODE_DROPDOWN_LABEL.png.sha1

-e66b253a61fcc053cb6f7d3eaae4f7d826477a69
+b4c50b81687371a3185c81bd1cb67c8288726f82
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