Update EOL banners (#6009)

## What are you changing in this pull request and why?

Updating the EOL banner texts, removing versions and fixing links in the
text.

## Checklist
- [ ] I have reviewed the [Content style
guide](https://github.com/dbt-labs/docs.getdbt.com/blob/current/contributing/content-style-guide.md)
so my content adheres to these guidelines.
- [ ] The topic I'm writing about is for specific dbt version(s) and I
have versioned it according to the [version a whole
page](https://github.com/dbt-labs/docs.getdbt.com/blob/current/contributing/single-sourcing-content.md#adding-a-new-version)
and/or [version a block of
content](https://github.com/dbt-labs/docs.getdbt.com/blob/current/contributing/single-sourcing-content.md#versioning-blocks-of-content)
guidelines.
- [ ] I have added checklist item(s) to this list for anything anything
that needs to happen before this PR is merged, such as "needs technical
review" or "change base branch."
<!--
PRE-RELEASE VERSION OF dbt (if so, uncomment):
- [ ] Add a note to the prerelease version [Migration
Guide](https://github.com/dbt-labs/docs.getdbt.com/tree/current/website/docs/docs/dbt-versions/core-upgrade)
-->
<!-- 
ADDING OR REMOVING PAGES (if so, uncomment):
- [ ] Add/remove page in `website/sidebars.js`
- [ ] Provide a unique filename for new pages
- [ ] Add an entry for deleted pages in `website/vercel.json`
- [ ] Run link testing locally with `npm run build` to update the links
that point to deleted pages
-->

---------

Co-authored-by: Mirna Wong <[email protected]>

website/src/theme/DocRoot/Layout/Main/index.js

@@ -71,7 +71,7 @@ export default function DocRootLayoutMain({
     } else {
       setPreData({
         showisPrereleaseBanner: true,
-        isPrereleaseBannerText: `You are viewing the docs for a prerelease version of dbt Core. There may be features described that are still in development, incomplete, or unstable.`,
+        isPrereleaseBannerText: `You are viewing the docs for a prerelease version of dbt Core. There may be features described that are still in development, incomplete, or unstable. For the latest generally available features, install the <a href="https://github.com/dbt-labs/dbt-core/releases/latest"> latest stable version</a>`,
       });
     }
     // If EOLDate not set for version, do not show banner
@@ -86,12 +86,12 @@ export default function DocRootLayoutMain({
       if (new Date() > new Date(EOLDate)) {
         setEOLData({
           showEOLBanner: true,
-          EOLBannerText: `This version of dbt Core is <a href="/docs/core-versions">no longer supported</a>. No patch releases will be made, even for critical security issues. For better performance, improved security, and new features, you should upgrade to ${latestStableRelease}, the latest stable version.`,
+          EOLBannerText: `This version of dbt Core is <a href="/docs/dbt-versions/core">no longer supported</a>. There will be no more patches or security fixes. For improved performance, security, and features, upgrade to the <a href="https://github.com/dbt-labs/dbt-core/releases/latest"> latest stable version</a>.`,
         });
       } else if (new Date() > threeMonths) {
         setEOLData({
           showEOLBanner: true,
-          EOLBannerText: `This version of dbt Core is nearing the end of its <a href="/docs/core-versions">critical support period</a>. For better performance, improved security, and new features, you should upgrade to ${latestStableRelease}, the latest stable version.`,
+          EOLBannerText: `This version of dbt Core is nearing the end of its <a href="/docs/dbt-versions/core">critical support period</a>. For improved perfomance, security, and features, upgrade to the <a href="https://github.com/dbt-labs/dbt-core/releases/latest"> latest stable version</a>.`,
         });
       } else {
         setEOLData({