Mention AntPathMatcher regexp support

This commit documents the regexp support in `AntPathMatcher` when
matching for URL patterns. This support is also mentioned in places
where developers can register patterns for ViewControllers or resource
handlers.

Issue: SPR-14652

spring-webmvc/src/main/java/org/springframework/web/servlet/config/annotation/ResourceHandlerRegistry.java

@@ -92,6 +92,9 @@ public class ResourceHandlerRegistry {
 	 * Add a resource handler for serving static resources based on the specified URL path
 	 * patterns. The handler will be invoked for every incoming request that matches to
 	 * one of the specified path patterns.
+	 * <p>Patterns like {@code "/static/**"} or {@code "/css/{filename:\\w+\\.css}"}
+	 * are allowed. See {@link org.springframework.util.AntPathMatcher} for more details on the
+	 * syntax.
 	 * @return A {@link ResourceHandlerRegistration} to use to further configure the
 	 * registered resource handler
 	 */

spring-webmvc/src/main/java/org/springframework/web/servlet/config/annotation/ViewControllerRegistry.java

@@ -49,6 +49,9 @@ public class ViewControllerRegistry {
 	/**
 	 * Map a view controller to the given URL path (or pattern) in order to render
 	 * a response with a pre-configured status code and view.
+	 * <p>Patterns like {@code "/admin/**"} or {@code "/articles/{articlename:\\w+}"}
+	 * are allowed. See {@link org.springframework.util.AntPathMatcher} for more details on the
+	 * syntax.
 	 */
 	public ViewControllerRegistration addViewController(String urlPath) {
 		ViewControllerRegistration registration = new ViewControllerRegistration(urlPath);