Fix typo in readme

Co-authored-by: Julien Duchesne <julienduchesne@live.com>

Author: inkel

README.md

@@ -1,6 +1,6 @@
 # Grafana HTTP API Client for Go
 
-This library provides a low-level client to access Grafaba [HTTP API](https://grafana.com/docs/grafana/latest/http_api/).
+This library provides a low-level client to access Grafana [HTTP API](https://grafana.com/docs/grafana/latest/http_api/).
 
 :warning: This repository is still active but not under heavy development.
 Contributions to this library offering support for the [Terraform provider for Grafana](https://github.com/grafana/terraform-provider-grafana) will be prioritized over generic ones.