Add link in Contribution to Mapping Assistant

README.md

@@ -38,6 +38,9 @@ Pull requests are welcome. For questions and major changes, please open an issue
 
 If you got any questions, join our [Discord server](https://discord.gg/a9cu5t5fKc).
 
+### Helpful tool
+[![Soitora/PlexAniSync-Mapping-Assistant - GitHub](https://github-readme-stats.vercel.app/api/pin/?username=Soitora&repo=PlexAniSync-Mapping-Assistant&bg_color=161B22&text_color=c9d1d9&title_color=0877d2&icon_color=0877d2&border_radius=8&hide_border=true)](https://github.com/Soitora/PlexAniSync-Mapping-Assistant)
+
 ## Credits
 
 Thank you to all the people who have already contributed!