update env.

.env.example

@@ -31,10 +31,6 @@ DEFAULT_LOCALE=equal
 # For a list of supported time zones, see https://en.wikipedia.org/wiki/List_of_tz_database_time_zones
 TZ=Europe/Amsterdam
 
-# This variable must match your installation's external address but keep in mind that
-# it's only used on the command line as a fallback value.
-APP_URL=http://localhost
-
 # TRUSTED_PROXIES is a useful variable when using Docker and/or a reverse proxy.
 # Set it to ** and reverse proxies work just fine.
 TRUSTED_PROXIES=
@@ -274,3 +270,15 @@ IS_SANDSTORM=false
 IS_DOCKER=false
 IS_HEROKU=false
 BUNQ_USE_SANDBOX=false
+
+#
+# If you have trouble configuring your Firefly III installation, DON'T BOTHER setting this variable.
+# It won't work. It doesn't do ANYTHING. Don't believe the lies you read online. I'm not joking.
+# This configuration value WILL NOT HELP.
+#
+# This variable is ONLY used in some of the emails Firefly III sends around. Nowhere else.
+# So when configuring anything WEB related this variable doesn't do anything. Nothing
+#
+# If you're stuck I understand you get desperate but look SOMEWHERE ELSE.
+#
+APP_URL=http://localhost