[Autofill Assistant] Update onboarding text

Screenshot:
https://screenshot.googleplex.com/AUtrErL2i6g.png

Bug: b/145898741
Change-Id: I5aa981e76f448738a2cbc78c52cc35c10d598714
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2019343Reviewed-by: Mathias Carlen <mcarlen@chromium.org>
Commit-Queue: Luca Hunkeler <hluca@google.com>
Cr-Commit-Position: refs/heads/master@{#734946}

chrome/android/features/autofill_assistant/java/strings/android_chrome_autofill_assistant_strings.grd

@@ -172,7 +172,7 @@
         Google Assistant saves you time by helping you complete actions on the web, like search and checkout.
       </message>
       <message name="IDS_AUTOFILL_ASSISTANT_GOOGLE_TERMS_DESCRIPTION" desc="Message linking to the Google terms and conditions for Google Assistant in Chrome.">
-        Google Assistant sends queries (text and voice) to Chrome. Chrome will send the site's URL and content as well as relevant personal information to Google. Depending on the query this can include email and credit card type. You can turn this off in Chrome settings. <ph name="BEGIN_LINK">&lt;link&gt;</ph>Learn&#xA0;more<ph name="END_LINK">&lt;/link&gt;</ph>
+        To help you complete tasks, Google will receive the URLs and contents of sites on which you use Assistant, as well as information you submit through Assistant. This information may be stored in your Google account. You can turn off Assistant in Chrome settings. <ph name="BEGIN_LINK">&lt;link&gt;</ph>Learn&#xA0;more<ph name="END_LINK">&lt;/link&gt;</ph>
       </message>
       <message name="IDS_AUTOFILL_ASSISTANT_GOOGLE_TERMS_URL" desc="URL for Google Autofill Assistant Terms of Service" translateable="false">
         http://support.google.com/assistant?p=fast_checkout