fix spelling mistake (#590)

diff --git a/docs/en-us/user/quick-start.md b/docs/en-us/user/quick-start.md
index 48712b6..bbf0b14 100644
--- a/docs/en-us/user/quick-start.md
+++ b/docs/en-us/user/quick-start.md
@@ -89,7 +89,7 @@
 ```
 
 The demo uses multicast as the registry since it is simple and does not require to extra installation.
-If you prefer a registiry like zookeeper, please check out examples [here](https://github.com/dubbo/dubbo-samples).
+If you prefer a registry like zookeeper, please check out examples [here](https://github.com/dubbo/dubbo-samples).
 
 ### Configure the logging system
 
@@ -249,4 +249,4 @@
 
 [^1]: The interface needs to be packaged separately, shared by the service provider and the consumer
 [^2]: Hidden realization of service consumer
-[^3]: IoC injection can also be used
\ No newline at end of file
+[^3]: IoC injection can also be used