Modify description in request controller subsystem to proper sentence

{

    "outcome" => "success",
    "result" => {
        "description" => "The request controller subsystem. Used for request limiting and graceful shutdown",
        "capabilities" => [
         Unknown macro: \{             "name" => "org.wildfly.request-controller",             "dynamic" => false         }
],

         "attributes" => {
            "active-requests" =>
Unknown macro: \{                 "type" => INT,                 "description" => "The number of requests that are currently running in the server",                 "expressions-allowed" => false,                 "required" => false,                 "nillable" => true,                 "access-type" => "metric",                 "storage" => "runtime"             }
,

            "max-requests" =>
Unknown macro: \{                 "type" => INT,                 "description" => "The maximum number of all types of requests that can be running in a server at a time. Once this limit is hit any new requests will be rejected.",                 "expressions-allowed" => true,                 "required" => false,                 "nillable" => true,                 "default" => -1,                 "access-type" => "read-write",                 "storage" => "configuration",                 "restart-required" => "all-services"             }
,

            "track-individual-endpoints" =>
Unknown macro: \{                 "type" => BOOLEAN,                 "description" => "If this is true requests are tracked at an endpoint level, which will allow individual deployments to be suspended",                 "expressions-allowed" => true,                 "required" => false,                 "nillable" => true,                 "default" => false,                 "access-type" => "read-write",                 "storage" => "configuration",                 "restart-required" => "all-services"             }
        },

        "operations" => undefined,
        "notifications" => undefined,
        "children" => {}
    }
}