Fix Javadoc since tag for AbstractGenericWebContextLoader.createContext()

See gh-28983
Closes gh-29154

Author: izeye

spring-test/src/main/java/org/springframework/test/context/web/AbstractGenericWebContextLoader.java

@@ -154,7 +154,7 @@ protected void validateMergedContextConfiguration(WebMergedContextConfiguration
 	 * {@code GenericWebApplicationContext} with a custom
 	 * {@link DefaultListableBeanFactory} implementation.
 	 * @return a newly instantiated {@code GenericWebApplicationContext}
-	 * @since 5.2.23
+	 * @since 5.3.23
 	 */
 	protected GenericWebApplicationContext createContext() {
 		return new GenericWebApplicationContext();