fix metrics format (#23520)

streaming/index.js

@@ -856,13 +856,13 @@ const startWorker = async (workerId) => {
     res.write('# TYPE connected_channels gauge\n');
     res.write('# HELP connected_channels The number of Redis channels the streaming server is subscribed to\n');
     res.write(`connected_channels ${Object.keys(subs).length}.0\n`);
-    res.write('# TYPE pg_pool_total_connections gauge \n');
+    res.write('# TYPE pg_pool_total_connections gauge\n');
     res.write('# HELP pg_pool_total_connections The total number of clients existing within the pool\n');
     res.write(`pg_pool_total_connections ${pgPool.totalCount}.0\n`);
-    res.write('# TYPE pg_pool_idle_connections gauge \n');
+    res.write('# TYPE pg_pool_idle_connections gauge\n');
     res.write('# HELP pg_pool_idle_connections The number of clients which are not checked out but are currently idle in the pool\n');
     res.write(`pg_pool_idle_connections ${pgPool.idleCount}.0\n`);
-    res.write('# TYPE pg_pool_waiting_queries gauge \n');
+    res.write('# TYPE pg_pool_waiting_queries gauge\n');
     res.write('# HELP pg_pool_waiting_queries The number of queued requests waiting on a client when all clients are checked out\n');
     res.write(`pg_pool_waiting_queries ${pgPool.waitingCount}.0\n`);
     res.write('# EOF\n');