docs!: add note about reworked config

Forgot to add the ! to the original commit 1187172

Author: Saghen

README.md

@@ -1,6 +1,9 @@
 > [!WARNING]
 > This plugin is _beta_ quality. Expect breaking changes and many bugs
 
+> [!NOTE]
+> The configuration was recently reworked, please read the [configuration section](#configuration) for the new schema
+
 > [!NOTE]
 > If you're on a release tag, ensure you're viewing the README for [the latest release](https://github.com/Saghen/blink.cmp/tree/v0.6.1)