Fixed response classes in hlrc docs

docs/java-rest/high-level/ccr/pause_follow.asciidoc

@@ -1,7 +1,7 @@
 --
 :api: ccr-pause-follow
 :request: PauseFollowRequest
-:response: PauseFollowResponse
+:response: AcknowledgedResponse
 --
 
 [id="{upid}-{api}"]

docs/java-rest/high-level/ccr/resume_follow.asciidoc

@@ -1,7 +1,7 @@
 --
 :api: ccr-resume-follow
 :request: ResumeFollowRequest
-:response: ResumeFollowResponse
+:response: AcknowledgedResponse
 --
 
 [id="{upid}-{api}"]

docs/java-rest/high-level/ccr/unfollow.asciidoc

@@ -1,7 +1,7 @@
 --
 :api: ccr-unfollow
 :request: UnfollowRequest
-:response: UnfollowResponse
+:response: AcknowledgedResponse
 --
 
 [id="{upid}-{api}"]