Merge pull request #2636 from PikachuHy/master

[skip ci] fix typo
diff --git a/lib/py/src/server/TNonblockingServer.py b/lib/py/src/server/TNonblockingServer.py
index fdf6779..cef4079 100644
--- a/lib/py/src/server/TNonblockingServer.py
+++ b/lib/py/src/server/TNonblockingServer.py
@@ -21,7 +21,7 @@
 The main idea of the server is to receive and send requests
 only from the main thread.
 
-The thread poool should be sized for concurrent tasks, not
+The thread pool should be sized for concurrent tasks, not
 maximum connections
 """