Update index.md

Author: yqz5625

programming/javascript/faq/index.md

@@ -85,4 +85,7 @@ noTitleIndex: true
 
 38. [Why isn't my webcam reading the barcode on my driver's license or ID card?](webcam-support-dense.md)
 
-39. [What are the system requirements for running the latest version of Dynamsoft Barcode Reader?](system-requirement.md)
+39. [What are the system requirements for running the latest version of Dynamsoft Barcode Reader?](system-requirement.md)
+
+40. [How to Enable Specific Barcode Formats with Your License](enable-supported-barcode-format.md
+)