Add quick tip to sprints

Author: nikoshell

src/content/pages/sprints_info.md

@@ -39,6 +39,12 @@ To submit a project for the sprints, head to
 add your project as a markdown file in the folder `src/content/sprints`. Use the
 file `_sprints_template.md` as the template for your project file.
 
+💡 **Quick tip:** You can quickly edit and prepare your changes directly in the
+browser using
+[github web-based editor](https://github.dev/EuroPython/website/blob/ep2025/src/content/sprints/_sprints_template.md).
+
+Once your file is added, submit a Pull Request — and you're done!
+
 <!-- ## Location of the sprints venue
 The Rajska Building (RB), [Žižkov Campus, VŠE](https://maps.app.goo.gl/azRTAczu8B5ma1XFA) (Prague University of Economics and Business) is the home of our sprints again this year.