rename npm package to pxt-calliopemini

package.json

@@ -1,5 +1,5 @@
 {
-    "name": "pxt-calliope",
+    "name": "pxt-calliopemini",
     "version": "3.0.30",
     "description": "micro:bit target for Microsoft MakeCode (PXT)",
     "keywords": [