Update MongoDB readme to remove obsolete data

Author: danny6167

database/nosql/mongodb/README.md

@@ -10,23 +10,6 @@ To disable the message about free monitoring you can run `db.disableFreeMonitori
 
 ## Security
 
-By default, MongoDB **does not enforce access control**, meaning that even if you set an admin username and password in the settings of your Pterodactyl server, **anyone will be able to connect to the database without authentication**, and perform any operation.
-
-> :warning: This is why we recommend to expose your MongoDB database only to your local network, if possible
-
-### Enabling authentication
-
-To enable authentification, you need to edit the following lines to your `mongod.conf` file:
-
-```yaml
-security:
-  authorization: "enabled"
-```
-
-> :closed_lock_with_key: To learn more about MongoDB security, you can read the [MongoDB Security Checklist](https://www.mongodb.com/docs/manual/administration/security-checklist/#security-checklist)
-
-### Notes specific to the MongoDB 6+
-
 **MongoDB 6+ eggs enable access control by default** in the `mongod.conf` file, meaning that even if people will be able to connect to your database as guests, [they will not be able to perform any operation, apart from nonhazardous commands](https://dba.stackexchange.com/a/292175)
 
 ### Disabling authentication
@@ -40,7 +23,7 @@ security:
 
 ## Minimum RAM warning
 
-MongoDB requires approximately 1GB of RAM per 100.000 assets. If the system has to start swapping memory to disk, this will have a severely negative impact on performance, and should be avoided.
+MongoDB requires approximately 1GB of RAM per 100,000 assets. If the system has to start swapping memory to disk, this will have a severely negative impact on performance, and should be avoided.
 
 ## Server Ports