add note about MaxMind's GeoLite2-City requiring more RAM

docs/self-hosting.md

@@ -126,11 +126,11 @@ your instance:
 
 ### 1. MaxMind geolocation database
 
-Plausible uses the country database created by [dbip](https://db-ip.com/) for enriching analytics data with visitor countries. The database is shipped with Plausible and country data collection happens automatically.
+Plausible uses the country database created by [DB-IP](https://db-ip.com/) for enriching analytics data with visitor countries. The database is shipped with Plausible and country data collection happens automatically.
 
 Optionally, you can use [MaxMind](https://www.maxmind.com) services. Their end-user license does not make it very easy to just package the database along with an open-source product.
 
-This is why, to use MaxMind, you need to create an account [here](https://www.maxmind.com/en/geolite2/signup). Once you have your account details, you can add `MAXMIND_LICENSE_KEY` and `MAXMIND_EDITION` environmental valiables as described in [IP Geolocation configuration options,](self-hosting-configuration.md#ip-geolocation) and the databases would be automatically downloaded and kept up to date.
+This is why, to use MaxMind, you need to create an account [here](https://www.maxmind.com/en/geolite2/signup). Once you have your account details, you can add `MAXMIND_LICENSE_KEY` and `MAXMIND_EDITION` environmental valiables as described in [IP Geolocation configuration options,](self-hosting-configuration.md#ip-geolocation) and the databases would be automatically downloaded and kept up to date. Note that  using city-level databases like MaxMind's `GeoLite2-City` requires ~1GB more RAM.
 
 ### 2. Reverse proxy