Fix title step type formatting

HiDeoo · HiDeoo · commit fda39323a6bb · 2022-09-17T11:40:06.000+02:00
diff --git a/index.d.ts b/index.d.ts
@@ -19,7 +19,8 @@ declare module 'intro.js-react' {
     /**
      * The tooltip title.
     */
-    title?:string
+    title?: string
+
     /**
      * CSS class of the tooltip.
      */
