Remove erroneous \n from durationNote.qute.adoc

They came from the string -> qute conversion.

(cherry picked from commit 93f02be)

devtools/config-doc-maven-plugin/src/main/resources/templates/tags/durationNote.qute.adoc

@@ -8,8 +8,8 @@ See the link:https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/t
 
 You can also use a simplified format, starting with a number:
 
-* If the value is only a number, it represents time in seconds.\n
-* If the value is a number followed by `ms`, it represents time in milliseconds.\n
+* If the value is only a number, it represents time in seconds.
+* If the value is a number followed by `ms`, it represents time in milliseconds.
 
 In other cases, the simplified format is translated to the `java.time.Duration` format for parsing: