Polish "Correct description of overrides for spring.redis.url"

See gh-36477

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/data/redis/RedisProperties.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2022 the original author or authors.
+ * Copyright 2012-2023 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.

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/data/redis/RedisAutoConfigurationTests.java

@@ -139,8 +139,9 @@ class RedisAutoConfigurationTests {
 	@Test
 	void testOverrideUrlRedisConfiguration() {
 		this.contextRunner
-			.withPropertyValues("spring.redis.host:foo", "spring.redis.password:xyz", "spring.redis.port:1000",
-					"spring.redis.ssl:false", "spring.redis.url:rediss://user:password@example:33")
+			.withPropertyValues("spring.redis.host:foo", "spring.redis.user:alice", "spring.redis.password:xyz",
+					"spring.redis.port:1000", "spring.redis.ssl:false",
+					"spring.redis.url:rediss://user:password@example:33")
 			.run((context) -> {
 				LettuceConnectionFactory cf = context.getBean(LettuceConnectionFactory.class);
 				assertThat(cf.getHostName()).isEqualTo("example");