Custom Emoji docs: Make it clear that config.exs is not for lewd.

diff --git a/docs/config/custom_emoji.md b/docs/config/custom_emoji.md
index 419a7d0e2366f05127a7376a8a28600372c4eca6..5ce9865a27ba940e0ff5412c427dd46449f1e5f8 100644 (file)
--- a/docs/config/custom_emoji.md
+++ b/docs/config/custom_emoji.md
@@ -20,7 +20,7 @@ The files should be PNG (APNG is okay with `.png` for `image/png` Content-type)
 
 ## Emoji tags (groups)
 
-Default tags are set in `config.exs`.
+Default tags are set in `config.exs`. To set your own tags, copy the structure to your secrets file (`prod.secret.exs` or `dev.secret.exs`) and edit it.
 ```elixir
 config :pleroma, :emoji,
   shortcode_globs: ["/emoji/custom/**/*.png"],