Add OpenMLDB provider link in ecosystem (#644)

* Add OpenMLDB provider link in ecosystem
diff --git a/landing-pages/site/content/en/ecosystem/_index.md b/landing-pages/site/content/en/ecosystem/_index.md
index 035b2a5..75abd22 100644
--- a/landing-pages/site/content/en/ecosystem/_index.md
+++ b/landing-pages/site/content/en/ecosystem/_index.md
@@ -57,6 +57,8 @@
 
 [Airflow ECR Plugin](https://github.com/asandeep/airflow-ecr-plugin) - Plugin to refresh AWS ECR login token at regular intervals. This is helpful where DockerOperator needs to pull images hosted on ECR.
 
+[Airflow OpenMLDB Provider](https://github.com/4paradigm/OpenMLDB/tree/main/extensions/airflow-provider-openmldb) - Airflow OpenMLDB Provider containing Operators for Feature Extraction on OpenMLDB.
+
  
 
 ## Async Providers