Update README.md

Author: learning-zone

README.md

@@ -2402,12 +2402,8 @@ Console.WriteLine(msg);
 **5. Raw interpolated string (C# 11+):**
 
 ```cs
-string json = $"""
-    {{
-        "name": "{name}",
-        "age": {age}
-    }}
-    """;
+string json = $$"""{ "name": "{{name}}",  "age": {{age}} }""";
+
 Console.WriteLine(json);
 ```