docs: add scarf pixel (#144)

added scarf pixel to Fabric SDK docs

docs/sdk/index.md

@@ -2,6 +2,8 @@
 ![Pythonversion](https://img.shields.io/badge/python-3.8%20%7C%203.9%20%7C%203.10-blue)
 [![downloads](https://pepy.tech/badge/ydata-fabric-sdk/month)](https://pepy.tech/project/ydata-fabric-sdk)
 
+<img referrerpolicy="no-referrer-when-downgrade" src="https://static.scarf.sh/a.png?x-pxid=08dac575-f8f7-47d1-ad7d-58541aecd025" />
+
 The *Fabric SDK* is an ecosystem of methods that allows users to, through a python interface, adopt data development focused on improving the quality of the data.
 The solution includes a set of integrated components for data ingestion, standardized data quality evaluation and data improvement, such as *synthetic data generation*, allowing an iterative improvement of the datasets used in high-impact business applications.