feat(docker): add treesit support

modules/tools/docker/README.org

@@ -18,6 +18,9 @@ functions allow images to be built easily.
 ** Module flags
 - +lsp ::
   Enable integration for the Dockerfile Language Server.
+- +tree-sitter ::
+  Leverages tree-sitter for better syntax highlighting and structural text
+  editing. Requires Emacs 29.1+ and [[doom-module::tools tree-sitter]].
 
 ** Packages
 - [[doom-package:docker]]