[docs] Fix broken link for doris connector docs (#51)

diff --git a/README.md b/README.md
index a4521ab..dd69234 100644
--- a/README.md
+++ b/README.md
@@ -28,7 +28,7 @@
 
 If you wish to contribute or use a connector from flink 1.13 (and earlier), please use the [branch-for-flink-before-1.13](https://github.com/apache/doris-flink-connector/tree/branch-for-flink-before-1.13)
 
-More information about compilation and usage, please visit [Flink Doris Connector](https://doris.apache.org/docs/ecosystem/flink-doris-connector.html)
+More information about compilation and usage, please visit [Flink Doris Connector](https://doris.apache.org/docs/ecosystem/flink-doris-connector/)
 
 ## License