use SPDX disjunctive operator

package.json

@@ -4,7 +4,7 @@
     "version": "1.0.0",
     "homepage": "http://github.com/jrburke/amdefine",
     "author": "James Burke <jrburke@gmail.com> (http://github.com/jrburke)",
-    "license": "BSD-3-Clause AND MIT",
+    "license": "BSD-3-Clause OR MIT",
     "repository": {
         "type": "git",
         "url": "https://github.com/jrburke/amdefine.git"