fix: updated prefix variable description (#288)

Co-authored-by: akocbek <akocbek>

Author: akocbek

ibm_catalog.json

@@ -52,8 +52,7 @@
             },
             {
               "key": "prefix",
-              "required": true,
-              "description": "Prefix to add to all resources created by this solution. To not use any prefix value, you can enter the string `__NULL__`."
+              "required": true
             },
             {
               "key": "use_existing_resource_group",
@@ -122,7 +121,6 @@
                   "displayname": "Sao Paolo (br-sao)",
                   "value": "br-sao"
                 }
-
               ]
           },
           {
@@ -331,7 +329,6 @@
           {
             "key": "provision_public_ingress"
           }
-
         ],
           "release_notes_url": "RELEASE NOTES URL",
           "outputs": [],