order sources and make formatting more consistent

Author: TimidRobot

env.example

@@ -1,7 +1,15 @@
 # This file must be copied to .env and the appropriate variables populated.
 
 
-## GCS (Google Custom Search)
+## Europeana
+
+# Europeana Search API Documentation:
+# https://europeana.atlassian.net/wiki/spaces/EF/pages/2385739812/Search+API+Documentation#Request
+
+# EUROPEANA_API_KEY =
+
+
+# GCS (Google Custom Search)
 
 # https://developers.google.com/custom-search/v1/introduction
 # "Custom Search JSON API requires the use of an API key. An API key is a way
@@ -29,6 +37,3 @@
 # https://docs.github.com/en/rest/authentication/authenticating-to-the-rest-api
 
 # GH_TOKEN =
-
-# "Europeana Search API Documentation: https://europeana.atlassian.net/wiki/spaces/EF/pages/2385739812/Search+API+Documentation#Request
-# EUROPEANA_API_KEY =