Fix typo on time.

Author: nachogiljaldo

reader_test.go

@@ -365,7 +365,7 @@ func waitForTopic(ctx context.Context, t *testing.T, topic string) {
 		}
 
 		t.Logf("retrying after 1s")
-		time.Sleep(100 * time.Second)
+		time.Sleep(100 * time.Millisecond)
 		continue
 	}
 }