fix: Update link to docs about snap metadata (#5618)

Author: steverydz

redirects.yaml

@@ -134,6 +134,7 @@ docs/defining-a-command/?: https://documentation.ubuntu.com/snapcraft/stable/tut
 docs/snapcraft-docker-images/?: https://documentation.ubuntu.com/snapcraft/stable/how-to/crafting/specify-a-base/#containers
 docs/snapcraft-tutorials/?: https://documentation.ubuntu.com/snapcraft/stable/tutorials/
 docs/snapcraft-reference/?: https://documentation.ubuntu.com/snapcraft/stable/reference/
+docs/snapcraft-top-level-metadata/?: https://documentation.ubuntu.com/snapcraft/stable/reference/project-file/snapcraft-yaml/
 
 # Legacy forum redirects for pages that don't exist in RTD.
 # These are temporary and will be replaced when Snapcraft 7 is migrated.

static/js/publisher/pages/Listing/ListingForm/ListingForm.tsx

@@ -120,7 +120,7 @@ function ListingForm({ data, refetch }: Props): React.JSX.Element {
                   version of the snapcraft.yaml released to the stable channel.{" "}
                   <a
                     className="p-link--external"
-                    href="/docs/snapcraft-top-level-metadata"
+                    href="https://documentation.ubuntu.com/snapcraft/stable/reference/project-file/snapcraft-yaml"
                   >
                     Learn more
                   </a>

static/js/publisher/pages/PublisherSettings/PublisherSettingsForm.tsx

@@ -402,7 +402,10 @@ function PublisherSettingsForm({ settings }: Props) {
                     the latest revision pushed to the stable channel. If you
                     manually edit the Listing page, the automatic updates will
                     be turned off.{" "}
-                    <a href="/docs/snapcraft-top-level-metadata">Learn more</a>.
+                    <a href="https://documentation.ubuntu.com/snapcraft/stable/reference/project-file/snapcraft-yaml">
+                      Learn more
+                    </a>
+                    .
                   </span>
                 </label>
                 {getValues("update_metadata_on_release") && (