Fix kebab-case naming in config

src/main.rs

@@ -36,8 +36,7 @@ struct Options {
     database_path: PathBuf,
 }
 
-#[derive(Debug, Deserialize)]
-#[serde(default)]
+#[serde(default, rename_all = "kebab-case")]
 struct Config {
     database_path: PathBuf,
 }