Remove xsd versions from reference samples

Remove all xsd versions from the reference manual samples in favor of
"versionless" XSDs. For example, spring-beans-3.0.xsd becomes
spring-beans.xsd

Issue: SPR-10010

src/reference/docbook/validation.xml

@@ -1438,9 +1438,9 @@ public interface FormatterRegistrar {
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     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/mvc
-        http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">
+        http://www.springframework.org/schema/mvc/spring-mvc.xsd">
 
     <mvc:annotation-driven/>
 
@@ -1462,9 +1462,9 @@ public interface FormatterRegistrar {
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     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/mvc
-        http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">
+        http://www.springframework.org/schema/mvc/spring-mvc.xsd">
 
     <mvc:annotation-driven conversion-service="conversionService"/>
 
@@ -1546,7 +1546,7 @@ public class AppConfig {
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     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>
 
     <bean id="conversionService" class="org.springframework.format.support.FormattingConversionServiceFactoryBean">
         <property name="registerDefaultFormatters" value="false" />
@@ -1840,9 +1840,9 @@ public class MyController {
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     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/mvc
-        http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">
+        http://www.springframework.org/schema/mvc/spring-mvc.xsd">
 
     <mvc:annotation-driven validator="globalValidator"/>
 
@@ -1868,9 +1868,9 @@ public class MyController {
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     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/mvc
-        http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">
+        http://www.springframework.org/schema/mvc/spring-mvc.xsd">
 
     <!-- JSR-303 support will be detected on classpath and enabled automatically -->
     <mvc:annotation-driven/>