(DOCSP-12279): Update snooty.toml to match conf.py

Author: nlarew

snooty.toml

@@ -1,8 +1,39 @@
 name = "realm"
 title = "MongoDB Realm"
 
+intersphinx = [
+  "https://docs.mongodb.com/manual/mongodb.inv",
+  "https://docs.atlas.mongodb.com/atlas.inv"
+]
+
+# These are the pages that open when you click on them (instead of just being containers)
+toc_landing_pages = [
+  # Tutorial
+  "/tutorial",
+  # Cloud
+  "/authentication",
+  "/mongodb",
+  "/sync",
+  "/graphql",
+  "/functions",
+  "/triggers",
+  "/services",
+  "/hosting",
+  "/values-and-secrets",
+  "/deploy",
+  "/logs",
+  # SDKs
+  "/android",
+  "/ios",
+  "/node",
+  "/react-native",
+  "/web"
+]
+
+[substitutions]
+atlas = "Atlas"
+
 [constants]
-package-name-org = "docs-realm"
 realm = "realm"
 realms = "realms"
 client-database = "Realm Database"