Update README.md

Ph0tonic · abhinavsingh · commit 1a8fb7f08b67 · 2024-04-10T23:01:13.000+05:30
Add missing tutorial's link (cherry picked from commit e459f93)
diff --git a/tutorial/README.md b/tutorial/README.md
@@ -1,9 +1,10 @@
 # PROXY.PY TUTORIAL
 
-This directory contains Jupyter Notebook based tutorial.
+This directory contains Jupyter Notebook based tutorials.
 
 - [Welcome](welcome.ipynb)
 - [Http Parser](http_parser.ipynb)
 - [Responses](responses.ipynb)
 - [Requests](requests.ipynb)
 - [Eventing](eventing.ipynb)
+- [Connections](connections.ipynb)
