docs: make current docs version message dynamic

Author: KaneFreeman

packages/docs/src/pages/releases.tsx

@@ -145,8 +145,14 @@ const Releases = ({ docsGroups, searchablePages }: DocsMenuProps) => {
                 <strong>Note</strong>
               </AlertTitle>
               <Typography variant="subtitle1" component="div" color="inherit">
-                <span>The current docs are for Static CMS v3. For Static CMS v2, see&nbsp;</span>
-                <StyledLink href="https://v2.staticcms.org">https://v2.staticcms.org</StyledLink>.
+                <span>
+                  The current docs are for Static CMS v{latestMajorVersionNumber}. For Static CMS v
+                  {latestMajorVersionNumber - 1}, see&nbsp;
+                </span>
+                <StyledLink href={`https://v${latestMajorVersionNumber - 1}.staticcms.org`}>
+                  https://v{latestMajorVersionNumber - 1}.staticcms.org
+                </StyledLink>
+                .
               </Typography>
             </Alert>
           </Container>