docs: added test comment for GSoC practice PR

Author: ajaygoud116

site/en/community/contribute/index.md

@@ -62,3 +62,5 @@ and encouraging collaboration between researchers and industry. Since then,
 TensorFlow has grown into a thriving ecosystem of products, on a wide range of
 platforms. But our goal is still to make machine learning accessible to anyone,
 anywhere.
+
+<!-- Test comment added by Ajay for GSoC practice PR -->