Merge pull request #1345 from github/cc0-just

Replace Shields.io license link with Just license link for CC0 use ex…

Author: mlinksva

_licenses/cc0-1.0.txt

@@ -12,7 +12,7 @@ note: Creative Commons recommends taking the additional step of adding a boilerp
 
 using:
   Awesome: https://github.com/sindresorhus/awesome/blob/main/license
-  Shields.io: https://github.com/badges/shields/blob/master/LICENSE
+  just: https://github.com/casey/just/blob/master/LICENSE
   psdash: https://github.com/Jahaja/psdash/blob/master/LICENSE
 
 permissions: