Backport "Remove xsd versions from reference samples"

Issue: SPR-10010

spring-framework-reference/src/jdbc.xml

@@ -458,9 +458,9 @@ private static final class ActorMapper implements RowMapper<Actor> {
     xmlns:context="http://www.springframework.org/schema/context"
     xsi:schemaLocation="
         http://www.springframework.org/schema/beans
-        http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
+        http://www.springframework.org/schema/beans/spring-beans.xsd
         http://www.springframework.org/schema/context
-        http://www.springframework.org/schema/context/spring-context-3.0.xsd">
+        http://www.springframework.org/schema/context/spring-context.xsd">
     
     <bean id="corporateEventDao" class="com.example.JdbcCorporateEventDao">
         <property name="dataSource" ref="dataSource"/>
@@ -507,9 +507,9 @@ public class JdbcCorporateEventDao implements CorporateEventDao {
     xmlns:context="http://www.springframework.org/schema/context"
     xsi:schemaLocation="
         http://www.springframework.org/schema/beans
-        http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
+        http://www.springframework.org/schema/beans/spring-beans.xsd
         http://www.springframework.org/schema/context
-        http://www.springframework.org/schema/context/spring-context-3.0.xsd">
+        http://www.springframework.org/schema/context/spring-context.xsd">
     
     <!-- Scans within the base package of the application for @Components to configure as beans -->
     <context:component-scan base-package="org.springframework.docs.test" />