updated readme

Author: tyrneh

README.md

@@ -184,7 +184,8 @@ Join the [Discord community](https://discord.gg/NHxWPGhhSQ) to share ideas, disc
 # Contributors
 
 Special thanks to everyone who has contributed code:
-https://github.com/tyrneh/options-implied-probability/graphs/contributors
+[![Contributors](https://contrib.rocks/image?repo=tyrneh/options-implied-probability)](https://github.com/tyrneh/options-implied-probability/graphs/contributors)
 
-And for advisory support on theory and implementation:
+For advisory support on theory and implementation:
 - [integral-alpha.com](https://integral-alpha.com)
+- and others who prefer to go unnamed