Update README.md

Author: ikegee

README.md

@@ -29,8 +29,8 @@ Input JSON (json_example.json):
 ```
 ## Usage
 - ## Usage
-    -Please see ==json_print_example.txt==
-  
+    Please see <span style="background-color: #FFFF00">json_print_example.txt</span>
+
 - **Two Display Modes**:
   - Table View (`json_print_table.c`): Displays JSON arrays as formatted tables
   - ![json_print_table](https://github.com/user-attachments/assets/1449d2af-8e55-429f-a624-312a8f48cf97)