Update mongodb debian

mongodb-debian.md

@@ -34,16 +34,14 @@ security:
 ### Setting up the Canopy User/DB
 1. Restart `mongod` with `sudo systemctl restart mongod`
 2. Drop back into `mongosh` with authentication `mongosh -u 'admin'`, entering the password on prompt
-3. Switch over to the admin database `use admin`
+3. Switch over to the canopy database `use canopy`
 4. Create the canopy user:
 ```
 db.createUser(
   {
     user: "canopy",
     pwd: passwordPrompt(),
-    roles: [
-      { role: "dbOwner", db: "canopy" },
-    ]
+    roles: ["readWrite"]
   }
 )
 ```