docs: update readme

README.md

@@ -74,7 +74,7 @@ To contribute to diagram, check out [contribution guidelines](CONTRIBUTING.md).
 
 [Cloudiscovery](https://github.com/Cloud-Architects/cloudiscovery) helps you to analyze resources in your cloud (AWS/GCP/Azure/Alibaba/IBM) account. It allows you to create a diagram of analyzed cloud resource map based on this Diagrams library, so you can draw the your existing cloud infratructure with Cloudicovery.
 
-[Airflow Diagrams](https://github.com/feluelle/airflow-diagrams) provides a Airflow plugin that aims to easily visualise your Airflow DAGs on service level from providers like AWS, GCP, Azure, etc. via diagrams.
+[Airflow Diagrams](https://github.com/feluelle/airflow-diagrams) is an Airflow plugin that aims to easily visualise your Airflow DAGs on service level from providers like AWS, GCP, Azure, etc. via diagrams.
 
 ## License