license typo

Author: maholli

README.md

@@ -11,4 +11,5 @@ Tutorials, design resources, and more!
 
 ## License
 <a rel="license" href="http://creativecommons.org/licenses/by-sa/4.0/"><img alt="Creative Commons License" style="border-width:0" src="https://i.creativecommons.org/l/by-sa/4.0/88x31.png" /></a><br />
+- Hardware in this repository is licensed under a <a rel="license" href="http://creativecommons.org/licenses/by-sa/4.0/">Creative Commons Attribution-ShareAlike 4.0 International License</a>.
 - Software/firmware in this repository is licensed under MIT unless otherwise indicated.