OZG-6477 OZG-6439 Fix names of relations in response

alfa-service/src/main/java/de/ozgcloud/alfa/collaboration/FachstelleCollaboration.java

 package de.ozgcloud.alfa.collaboration;
 
+import org.springframework.hateoas.server.core.Relation;
+
 import com.fasterxml.jackson.annotation.JsonIgnore;
 
 import de.ozgcloud.alfa.common.LinkedResource;
@@ -12,6 +14,7 @@ import lombok.NoArgsConstructor;
 @Builder
 @AllArgsConstructor
 @NoArgsConstructor
+@Relation(itemRelation = "collaboration", collectionRelation = "collaborationList")
 public class FachstelleCollaboration implements Collaboration {
 
 	@JsonIgnore

alfa-service/src/main/java/de/ozgcloud/alfa/collaboration/OrganisationsEinheitCollaboration.java

 package de.ozgcloud.alfa.collaboration;
 
+import org.springframework.hateoas.server.core.Relation;
+
 import com.fasterxml.jackson.annotation.JsonIgnore;
 
 import de.ozgcloud.alfa.common.LinkedResource;
@@ -12,6 +14,7 @@ import lombok.NoArgsConstructor;
 @Builder
 @AllArgsConstructor
 @NoArgsConstructor
+@Relation(itemRelation = "collaboration", collectionRelation = "collaborationList")
 public class OrganisationsEinheitCollaboration implements Collaboration {
 
 	@JsonIgnore