accounts: delete personal data (#23471)

## Description
- Adds section for deleting personal data to help Kapa.ai w/ source info
- Also created a corrected response

https://docker.atlassian.net/browse/ENGDOCS-2965

Author: sarahsanders-docker

content/manuals/accounts/deactivate-user-account.md

@@ -50,3 +50,9 @@ to back up any important data.
 1. Select **Account settings**.
 1. Select **Deactivate**.
 1. Select **Deactivate account**, then select again to confirm.
+
+## Delete personal data
+
+Deactivating your account does not delete your personal data. To request
+personal data deletion, fill out Docker's
+[Privacy request form](https://preferences.docker.com/).