version bump to 3.0.1 and headliner server url change

package.json

@@ -5,7 +5,7 @@
   "id": "firefox.personalization.study@up.mozilla",
   "license": "MPL 2.0",
   "name": "firefox-personalization-study",
-  "version": "3",
+  "version": "3.0.1",
   "preferences": [
       {
         "name": "consented",
@@ -36,7 +36,7 @@
         "name": "nytimes_headliner_url",
         "title": "New York Times content personalization server",
         "type": "string",
-        "value": "https://headliner.mozillalabs.com/nytimes/mostpopular/personalize?limit=10"
+        "value": "https://headliner.up.mozillalabs.com/nytimes/mostpopular/personalize?limit=10"
       },
       {
         "name": "headliner_refresh_interval",