Update POST.md

docs/en/Community-Articles/2025-04-20-IDX10204/POST.md

@@ -1,9 +1,7 @@
-# Common errors in JWT Bearer
+# Common Errors in JWT Bearer Authentication
 
 When implementing JWT Bearer authentication in an ABP(tiered) application, you might occasionally encounter errors starting with `IDX`. These errors are related to JWT Bearer Token validation and this article will help you understand and resolve them.
 
-This article will introduce the principles of JWT Bearer authentication and provide some common error reasons and solutions.
-
 ## Enable JWT Bearer authentication
 
 Your API project usually contains the following code, which enables JWT Bearer authentication and makes it as the default authentication scheme.