fix lang

src/data/faq.json

@@ -32,7 +32,7 @@
     "content": "You can use the VS Code extension to visualize JSON data directly in your editor. Install the extension from the VS Code marketplace and follow the instructions at extension's page."
   },
   {
-    "title": "I've previously subscribed to premium plan, where did it go?",
+    "title": "I've previously subscribed to the premium plan, where did it go?",
     "content": "We have moved the premium features to ToDiagram.com. You can use the same credentials to access the premium features or manage your subscription."
   }
 ]