Add Bootstrapper initialize method to fix typo

Author: cprayer

spring-boot-project/spring-boot/src/main/java/org/springframework/boot/Bootstrapper.java

@@ -31,6 +31,16 @@ public interface Bootstrapper {
 	 * Initialize the given {@link BootstrapRegistry} with any required registrations.
 	 * @param registry the registry to initialize
 	 */
+	default void initialize(BootstrapRegistry registry) {
+	}
+
+	/**
+	 * Initialize the given {@link BootstrapRegistry} with any required registrations.
+	 * @param registry the registry to initialize
+	 * @deprecated since 2.4.4 in favor of
+	 * {@link Bootstrapper#initialize(BootstrapRegistry)}
+	 */
+	@Deprecated
 	void intitialize(BootstrapRegistry registry);
 
 }