correct name hive_db entity

InstallationSteps.txt

@@ -94,7 +94,7 @@ c. Using DGI
   curl -v http://localhost:21000/api/metadata/entities/list/hive_table
   {"requestId":"788558007@qtp-44808654-5","list":["cb9b5513-c672-42cb-8477-b8f3e537a162","ec985719-a794-4c98-b98f-0509bd23aac0","48998f81-f1d3-45a2-989a-223af5c1ed6e","a54b386e-c759-4651-8779-a099294244c4"]}
 
-  curl -v http://localhost:21000/api/metadata/entities/list/hive_database
+  curl -v http://localhost:21000/api/metadata/entities/list/hive_db
 
 * Search for entities (instances) in the repository
   curl -v http://localhost:21000/api/metadata/discovery/search/dsl?query="from hive_table"