adding canonical to metatags

Author: dino475

settings/seo.mdx

@@ -61,6 +61,7 @@ You can preview how your meta tags will appear on different platforms using [met
       "generator": "Mintlify",
       "theme-color": "#000000",
       "color-scheme": "light dark",
+      "canonical": "https://your-custom-domain-here.com",
       "format-detection": "telephone=no",
       "referrer": "origin",
       "refresh": "30",