Add a missing space for partitions count (#2803)

* Add a missing space for partitions count

* Update BrokersList.tsx

kafka-ui-react-app/src/components/Brokers/BrokersList/BrokersList.tsx

@@ -92,6 +92,7 @@ const BrokersList: React.FC = () => {
               onlinePartitionCount
             )}
             <Metrics.LightText>
+              {' '}
               of {(onlinePartitionCount || 0) + (offlinePartitionCount || 0)}
             </Metrics.LightText>
           </Metrics.Indicator>