Updates prefill docs to reflect update prefilled information pattern

[bellepx0]

Related ticket: #283

In this PR:

1. Change the status of the Update Prefill page from draft to published.
2. Change the status of Know how their information is updated page to deprecated and edited the language and link in the warning alert.
3. Update the "Know When Their Information is Prefilled" Page:
   a) Replace the existing screenshot for the introduction page with the updated prefill alert message that reads: "We've prefilled some of your information."
   b) Remove the "Prefilled Info Alert" Storybook example
   c) Redirect the URL https://design.va.gov/patterns/help-users-to/know-how-their-information-is-updated to https://design.va.gov/patterns/help-users-to/update-prefilled-information under "When to use this pattern" section
4. Ask Users for Addresses: Update the 3rd bullet point here to replace the sentence "Refer to the Help users to know how their information is updated pattern[link]" to "...Help users to update prefilled information[link]”.
5. Remove the alert about replacing the page from the Prefill component page.

"Know how their information is updated" page

"Know When Their Information is Prefilled" Page