Fix wrong formatting in TOML dict

Fix incorrect formatting after loading toml dict
---------

Co-authored-by: Martin Sandve Alnæs <msa@databutton.io>
Co-authored-by: Julian Hossbach <50084485+jhossbach@users.noreply.github.com>

pylsp_ruff/plugin.py

@@ -567,8 +567,8 @@ def load_settings(workspace: Workspace, document_path: str) -> PluginSettings:
         try:
             with open(pyproject_file[0], "rb") as f:
                 toml_dict = tomllib.load(f)
-            if "tool.ruff" in toml_dict:
-                config_in_pyproject = True
+                if "tool" in toml_dict and "ruff" in toml_dict["tool"]:
+                    config_in_pyproject = True
         except tomllib.TOMLDecodeError:
             log.warn("Error while parsing toml file, ignoring config.")