Fix RedisProperties link in the doc

Closes gh-5811

Author: snicoll

spring-boot-docs/src/main/asciidoc/appendix-application-properties.adoc

@@ -678,7 +678,7 @@ content into your application; rather pick only the properties that you need.
 	spring.mongodb.embedded.features=SYNC_DELAY # Comma-separated list of features to enable.
 	spring.mongodb.embedded.version=2.6.10 # Version of Mongo to use.
 
-	# REDIS ({sc-spring-boot-autoconfigure}/redis/RedisProperties.{sc-ext}[RedisProperties])
+	# REDIS ({sc-spring-boot-autoconfigure}/data/redis/RedisProperties.{sc-ext}[RedisProperties])
 	spring.redis.database=0 # Database index used by the connection factory.
 	spring.redis.host=localhost # Redis server host.
 	spring.redis.password= # Login password of the redis server.