[Docs Site] Rename /changelog-next/ to /changelog/, /changelog/ to /release-notes/ (#19675)

Author: KianNH

public/_redirects

@@ -4,6 +4,8 @@
 /dashboard-landing/ / 301
 /tutorials/ /search/?content_type%5B0%5D=Tutorial 301
 /sitemap.xml /sitemap-index.xml
+/changelog/index.xml /release-notes/index.xml 301
+/deprecations/ /fundamentals/api/reference/deprecations/ 301
 
 # 1dot1_redirect
 /1.1.1.1/1.1.1.1-for-families/ /1.1.1.1/setup/ 301
@@ -1810,6 +1812,7 @@
 /cloudflare-one/tutorials/zsh-env-var/ /cloudflare-one/tutorials/cli/ 301
 
 ### DYNAMIC REDIRECTS ###
+/changelog-next/* /changelog/:splat 301
 /*/sitemap.xml /sitemap-index.xml 301
 /access/configuring-identity-providers/* /cloudflare-one/identity/idp-integration/:splat 301
 /api-security/* /api-shield/:splat 301

src/components/changelog-next/Header.astro

@@ -39,7 +39,7 @@ const products = await uniqueProducts(notes);
 		<p>
 			New updates and improvements at Cloudflare.
 			<a
-				href="/changelog-next/rss.xml"
+				href="/changelog/rss.xml"
 				class="dark:!hover:text-[#79B1FF] -mx-2 whitespace-nowrap px-2 text-[#056DFF] no-underline hover:rounded-[4px] hover:bg-[#DCEBFF] hover:!text-[#056DFF] dark:text-[#79B1FF] dark:hover:bg-[#002B66] max-sm:block"
 			>
 				Subscribe to RSS

src/content/docs/fundamentals/api/reference/deprecations.mdx

@@ -14,7 +14,7 @@ import { ProductChangelog } from "~/components";
 Cloudflare occasionally makes updates to our APIs that result in behavior changes or deprecations. When this happens, we will communicate when the API will no longer be available and whether there will be a replacement.
 
 :::note
-Subscribe to all API deprecation posts via [RSS](/changelog/index.xml).
+Subscribe to all API deprecation posts via [RSS](/release-notes/index.xml).
 :::
 
 <ProductChangelog />

src/pages/changelog-next/index.astro

@@ -41,7 +41,7 @@ const props = {
 <StarlightPage {...props}>
 	<Header />
 	<div class="mt-0! mb-10">
-		<a href="/changelog-next/" class="no-underline">
+		<a href="/changelog/" class="no-underline">
 			<span class="text-accent">← </span>
 			<span class="text-black">Back to all posts</span>
 		</a>