Polish "Document the semantic of using multiple profile expressions"

See gh-44866

Author: snicoll

Diff for: spring-boot-project/spring-boot-docs/src/docs/antora/modules/reference/pages/features/external-config.adoc

@@ -545,9 +545,7 @@ The following activation properties are available:
 | Property | Note
 
 | `on-profile`
-| A profile expression that must match for the document to be active,
-or a list of profile expressions of which at least one must match for the document to be active.
-Please note comma-separated list such as `foo,bar` is equal to `foo\|bar` instead of `foo&bar`.
+| A profile expression that must match for the document to be active, or a list of profile expressions of which at least one must match for the document to be active.
 
 | `on-cloud-platform`
 | The javadoc:org.springframework.boot.cloud.CloudPlatform[] that must be detected for the document to be active.