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

src/docs/asciidoc/data-access.adoc

@@ -5503,10 +5503,10 @@ The following example creates a custom update method named `execute`:
 		}
 
 		/**
-		* @param id for the Customer to be updated
-		* @param rating the new value for credit rating
-		* @return number of rows updated
-		*/
+		 * @param id for the Customer to be updated
+		 * @param rating the new value for credit rating
+		 * @return number of rows updated
+		 */
 		fun execute(id: Int, rating: Int): Int {
 			return update(rating, id)
 		}
@@ -5517,10 +5517,8 @@ The following example creates a custom update method named `execute`:
 [[jdbc-StoredProcedure]]
 ==== Using `StoredProcedure`
 
-The `StoredProcedure` class is a superclass for object abstractions of RDBMS stored
-procedures. This class is `abstract`, and its various `execute(..)` methods have
-`protected` access, preventing use other than through a subclass that offers tighter
-typing.
+The `StoredProcedure` class is an `abstract` superclass for object abstractions of RDBMS
+stored procedures.
 
 The inherited `sql` property is the name of the stored procedure in the RDBMS.