tweak

Author: ywangd

server/src/main/java/org/elasticsearch/repositories/Repository.java

@@ -59,14 +59,14 @@ interface Factory {
         /**
          * Constructs a repository.
          *
-         * @param projectId the project-id for the repository. {@code null} if the repository is at the cluster level.
+         * @param projectId the project-id for the repository or {@code null} if the repository is at the cluster level.
          * @param metadata  metadata for the repository including name and settings
          */
         Repository create(@Nullable ProjectId projectId, RepositoryMetadata metadata) throws Exception;
 
         /**
          * Constructs a repository.
-         * @param projectId   the project-id for the repository. {@code null} if the repository is at the cluster level.
+         * @param projectId   the project-id for the repository or {@code null} if the repository is at the cluster level.
          * @param metadata    metadata for the repository including name and settings
          * @param typeLookup  a function that returns the repository factory for the given repository type.
          */
@@ -82,7 +82,7 @@ default Repository create(
     /**
      * Get the project-id for the repository.
      *
-     * @return the project-id, or null if the repository is at the cluster level.
+     * @return the project-id, or {@code null} if the repository is at the cluster level.
      */
     @Nullable
     ProjectId getProjectId();