Polish "Document use of @Profile with @ConfigurationProperties scanning"

Closes gh-16622

spring-boot-project/spring-boot-docs/src/main/asciidoc/spring-boot-features.adoc

@@ -1640,6 +1640,11 @@ as shown in the following example:
 	}
 ----
 
+NOTE: If `@ConfigurationProperties` beans are registered via `@EnableConfigurationProperties`
+instead of automatic scanning, the `@Profile` annotation needs to be specified on the `@Configuration`
+class that has the `@EnableConfigurationProperties` annotation. In the case where `@ConfigurationProperties`
+are scanned, `@Profile` can be specified on the `@ConfigurationProperties` class itself.
+
 You can use a `spring.profiles.active` `Environment` property to specify which profiles
 are active. You can specify the property in any of the ways described earlier in this
 chapter. For example, you could include it in your `application.properties`, as shown in