Link to image automation guides in menu

Signed-off-by: Hidde Beydals <hello@hidde.co>

mkdocs.yml

@@ -48,6 +48,7 @@ nav:
   - Get Started: get-started/index.md
   - Migration:
      - Migrate from Flux v1: guides/flux-v1-migration.md
+     - Migrate from Flux v1 image update automation: guides/flux-v1-automation-migration.md
      - Migrate from the Helm Operator: guides/helm-operator-migration.md
   - Guides:
       - Installation: guides/installation.md
@@ -58,6 +59,7 @@ nav:
       - Sealed Secrets: guides/sealed-secrets.md
       - Mozilla SOPS: guides/mozilla-sops.md
       - Automate image updates to Git: guides/image-update.md
+      - Sortable image tags to use with automation: guides/sortable-image-tags.md
   - Toolkit Components:
     - Overview: components/index.md
     - Source Controller: