Merge pull request #1096 from mqus/mqus-env-document-override

Add a note that settings in .env can be overridden

.env.template

 ## Bitwarden_RS Configuration File
 ## Uncomment any of the following lines to change the defaults
+## 
+## Be aware that most of these settings will be overridden if they were changed 
+## in the admin interface. Those overrides are stored within DATA_FOLDER/config.json .
 
 ## Main data folder
 # DATA_FOLDER=data