Docs: Clarify default prefix/suffix of registry.jsp()

[Dongnyoung]

Hello,

This PR clarifies the Spring MVC documentation for View Resolvers.
The current example shows registry.jsp(); but does not explain what defaults are applied.

In this file: https://github.com/spring-projects/spring-framework/blob/main/framework-docs/modules/ROOT/pages/web/webmvc/mvc-config/view-resolvers.adoc

Problem

• Readers may assume they must always configure a prefix and suffix manually.
• In reality, registry.jsp() registers an InternalResourceViewResolver with sensible defaults.
• The absence of this detail can cause confusion when JSP views are not resolved.

Changes Introduced

• Added a [NOTE] block immediately after the JSP example.
• The note clarifies that:
  • Default prefix: /WEB-INF/
  • Default suffix: .jsp
  • Explicit configuration is only required if JSP files are located in a different directory or use a different extension.
• The application.properties example was intentionally omitted here, since it is more relevant to Spring Boot documentation.

Closes #35429

Thank you for reviewing.

[bclozel]

I think this is already covered in the Javadocs: https://docs.spring.io/spring-framework/docs/current/javadoc-api/org/springframework/web/servlet/config/annotation/ViewResolverRegistry.html#jsp()

[Dongnyoung]

I understand this is already covered in the Javadoc, thanks for pointing it out.

Would it still make sense to keep a short [NOTE] or at least a cross-reference in the reference docs?
While the defaults can indeed be found in the Javadoc, a brief mention in the documentation could make it easier for readers to quickly grasp the behavior without having to jump into the API docs.

Happy to adjust the PR accordingly if you think it adds value.

[sdeleuze]

@Dongnyoung I don't think this is the right place for documenting such details, but I would suggest to rework your PR as an update of https://docs.spring.io/spring-framework/reference/web/webmvc-view/mvc-jsp.html to replace the XML bean declaration by a more high level JavaConfig configureViewResolvers(ViewResolverRegistry registry) code snippet displayed by default and a complementary <mvc:view-resolvers> XML one with a related note.

[Dongnyoung]

Thanks a lot for the valuable feedback 🙏
I’ve reworked this change according to your suggestions (JavaConfig example as the default, XML <mvc:view-resolvers> as a note, and no duplication of defaults).

Opened a new PR at #35444 with the updated version.