Update rules/S6856/java/rule.adoc

Co-authored-by: erwan-serandour <erwan.serandour@sonarsource.com>

rules/S6856/java/rule.adoc

@@ -7,7 +7,7 @@ They are part of the Spring Web module and are commonly used to define the route
 
 If a method has a path template containing a placeholder, like "/api/resource/{id}", and there's no `@PathVariable` annotation on a method parameter to capture the id path variable, Spring will disregard the id variable.
 
-This rule will raise an issue if a method does not have corresponding `@PathVariable` annotations and path templates placeholders.
+This rule will raise an issue if a method has a path template with a placeholder, but no corresponding `@PathVariable`, or vice-versa.
 
 == How to fix it