Update README.md

updated contact info.

README.md

@@ -30,7 +30,7 @@ Entanglion is an open source project and you can make your own copy of the game
 Please read through the [rule book](game) to understand how to play Entanglion. The online version of the rule book should be considered authoritative, and we will document any errata we find in the printed guide on that page.
 
 ## Teaching Entanglion
-If you are an educator who would like to use Entanglion as part of a learning curriculum, please [reach out to us](mailto:entangli@us.ibm.com). We would love to hear about your plans for Entanglion and we may be able to support your efforts.
+If you are an educator who would like to use Entanglion as part of a learning curriculum, please [reach out to us](mailto:entanglion@us.ibm.com). We would love to hear about your plans for Entanglion and we may be able to support your efforts.
 
 ## Expanding Entanglion
 Entanglion is an open-source project developed by IBM Research to teach players about quantum computing. We welcome community contributions to modify and extend gameplay. If you would like to develop an expansion to Entanglion, please check out our [expansion guide](expansions).