[Payments] Remove a period at the end of a sentence.

Tiniest change I've ever made.

Bug: None
Change-Id: I651d74811843e04072764068b9b330248f1c4bc9
Reviewed-on: https://chromium-review.googlesource.com/1125120Reviewed-by: Fabio Tirelo <ftirelo@chromium.org>
Commit-Queue: Fabio Tirelo <ftirelo@chromium.org>
Commit-Queue: Mathieu Perreault <mathp@chromium.org>
Cr-Commit-Position: refs/heads/master@{#572341}

components/autofill_strings.grdp

@@ -303,7 +303,7 @@
     Check your expiration year and try again
   </message>
   <message name="IDS_AUTOFILL_CARD_UNMASK_PROMPT_ERROR_PERMANENT" desc="Error message to show when a credit card cannot be verified and the user isn't allowed to retry.">
-    This card can't be verified right now.
+    This card can't be verified right now
   </message>
   <message name="IDS_AUTOFILL_CARD_UNMASK_PROMPT_ERROR_NETWORK" desc="Error message to show when a credit card cannot be verified because Wallet servers can't be reached.">
     There was a problem confirming your card. Check your internet connection and try again.