Fix TLD for GeoNames source (#29)

Updates TLD for GeoNames website from incorrect `.com` to `.org` and adds `www` to address to preserve HTTPS.
diff --git a/src/pages/documentation/examples/geocoding.mdx b/src/pages/documentation/examples/geocoding.mdx
index 1a11745..18589d4 100644
--- a/src/pages/documentation/examples/geocoding.mdx
+++ b/src/pages/documentation/examples/geocoding.mdx
@@ -9,7 +9,7 @@
 
 ## Dataset
 
-The data we will be using comes from [Geonames](https://geonames.com).
+The data we will be using comes from [Geonames](https://www.geonames.org).
 
 ## Generate the index