capitalization correction

Author: halkazwini

articles/web-application-firewall/afds/waf-front-door-configure-custom-response-code.md

@@ -60,7 +60,7 @@ To customize the response status code and body, follow these steps:
     :::image type="content" source="../media/waf-front-door-configure-custom-response-code/custom-response-settings.png" alt-text="Screenshot that shows Azure Web Application Firewall Policy settings." lightbox="../media/waf-front-door-configure-custom-response-code/custom-response-settings.png":::
 
     > [!NOTE]
-    > The [JavaScript Challenge](../waf-javascript-challenge.md) and [CAPTCHA](captcha-challenge.md) features are available only in WAF policies on the Azure Front Door Premium tier.
+    > The [JavaScript challenge](../waf-javascript-challenge.md) and [CAPTCHA](captcha-challenge.md) features are available only in WAF policies on the Azure Front Door Premium tier.
 
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