[visual signals] Fix confusing placeholder example

Replaces the example values for a single file copy/move description.

Bug: b/168813583
Change-Id: I8e3ccea35f500391d8b1df502085db4d1dc4572a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2437572Reviewed-by: Luciano Pacheco <lucmult@chromium.org>
Commit-Queue: Alex Danilo <adanilo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#811618}

ui/chromeos/file_manager_strings.grdp

@@ -768,7 +768,7 @@
     Copy operation failed, unexpected error: <ph name="ERROR_MESSAGE">$1<ex>Could not copy</ex></ph>
   </message>
   <message name="IDS_FILE_BROWSER_FILE_COPIED" desc="File Manager status message. 'Item' is used here as a generic term for file or directory.">
-    <ph name="NUMBER_OF_ITEMS">$1<ex>3</ex></ph> copied.
+    <ph name="FILE_NAME">$1<ex>big.xz</ex></ph> copied.
   </message>
   <message name="IDS_FILE_BROWSER_FILE_ITEMS" desc="File Manager status message. 'Item' is used here as a generic term for file or directory.">
     <ph name="NUMBER_OF_ITEMS">$1<ex>3</ex></ph> items
@@ -780,7 +780,7 @@
     <ph name="NUMBER_OF_ITEMS">$1<ex>3</ex></ph> items moved.
   </message>
   <message name="IDS_FILE_BROWSER_FILE_MOVED" desc="File Manager status message. 'Item' is used here as a generic term for file or directory.">
-    <ph name="NUMBER_OF_ITEMS">$1<ex>3</ex></ph> moved.
+    <ph name="FILE_NAME">$1<ex>big.xz</ex></ph> moved.
   </message>
    <!-- TODO (crbug/1093603): Clean up after FilesTransferDetails launch. -->
   <message name="IDS_FILE_BROWSER_MOVE_FILE_NAME" desc="File Manager status message.">

ui/chromeos/file_manager_strings_grdp/IDS_FILE_BROWSER_FILE_COPIED.png.sha1

-d0218c6981c069857eba06ad3f94bf373dc40573
+82c96c11c0634040463a9670fa9ab31af88bf927
\ No newline at end of file

ui/chromeos/file_manager_strings_grdp/IDS_FILE_BROWSER_FILE_MOVED.png.sha1

-6cb05b5c6046c76d4cec2360f28df27c93c37c66
+5d5c3b153e7bc697e43b9546acc4b15499f54553
\ No newline at end of file