Fix StoredProcedure documentation in reference manual
Fix StoredProcedure documentation in reference manual

This commit aligns the documentation in the reference manual with the
actual source code for StoredProcedure with regard to public execute()
methods.

Closes gh-26505

spring-projects/spring-framework,spring-projects/spring-framework,spring-projects/spring-framework,spring-projects/spring-framework,spring-projects/spring-framework,spring-projects/spring-framework,spring-projects/spring-framework