Update README.md (#343)

Typo Markdown list.

Author: MarcCote

README.md

@@ -170,9 +170,9 @@ contact [opencode@microsoft.com](mailto:opencode@microsoft.com) with any additio
 
 ## License
 
-[TextWorld](https://github.com/microsoft/TextWorld) - MIT License
-[Inform7](https://github.com/ganelson/inform) - Artistic License 2.0
-[Jericho](https://github.com/microsoft/jericho) - GNU General Public License (GPL) v2.0
-[Fast Downward](https://github.com/MarcCote/downward) - GNU General Public License (GPL) v3.0
-[Git](https://github.com/DavidKinder/Git) - MIT License
-[cheakglk](https://github.com/erkyrath/cheapglk) - MIT License
+- [TextWorld](https://github.com/microsoft/TextWorld) - MIT License
+- [Inform7](https://github.com/ganelson/inform) - Artistic License 2.0
+- [Jericho](https://github.com/microsoft/jericho) - GNU General Public License (GPL) v2.0
+- [Fast Downward](https://github.com/MarcCote/downward) - GNU General Public License (GPL) v3.0
+- [Git](https://github.com/DavidKinder/Git) - MIT License
+- [cheakglk](https://github.com/erkyrath/cheapglk) - MIT License