Fix typo

Closes gh-10276

crypto/src/test/java/org/springframework/security/crypto/password/DelegatingPasswordEncoderTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2017 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -129,7 +129,7 @@ public class DelegatingPasswordEncoderTests {
 	}
 
 	@Test
-	public void matchesWhenNoClosingPrefixStringThenIllegalArgumentExcetion() {
+	public void matchesWhenNoClosingPrefixStringThenIllegalArgumentException() {
 		assertThatIllegalArgumentException()
 				.isThrownBy(() -> this.passwordEncoder.matches(this.rawPassword, "{bcrypt" + this.rawPassword))
 				.withMessage("There is no PasswordEncoder mapped for the id \"null\"");