Trim README config example

Remove the verbose defaults snippet and add a brief localisation note pointing to the language setting.

README.md

@@ -38,24 +38,6 @@ The launcher copies Tcl/Tk resources into the virtualenv on first run, so no man
 5. Move through folder images with `⬅️` / `➡️`; exclusions stay put unless you opt into automatic resets.
 6. Save an overlay (`💾`) when ready.
 
-## Config Defaults
-Optional `config.toml`:
-```toml
-[language]
-language = "en"          # match files in app/lang (en, de)
-
-[options]
-reset_exclusions_on_image_change = false
-
-[defaults]
-hue_min = 250.0
-hue_max = 310.0
-sat_min = 15.0
-val_min = 15.0
-val_max = 100.0
-alpha = 120
-```
-
 ## Project Layout
 ```
 app/
@@ -67,6 +49,9 @@ config.toml       # optional defaults
 main.py           # entry point
 ```
 
+## Localisation
+- English and German translations ship in `app/lang`. Set the desired language via the top-level `language` key in `config.toml`.
+
 ## Development
 - Quick check: `uv run python -m compileall app main.py`
 - Contributions welcome; include screenshots for UI tweaks.