Update package.json

Remove comma I accidentally added

Author: jeanettephung

projects/zingchart-angular/package.json

@@ -15,7 +15,7 @@
   ],
   "peerDependencies": {
     "@angular/common": "^16.2.0",
-    "@angular/core": "^16.2.0",
+    "@angular/core": "^16.2.0"
   },
   "dependencies": {
     "zingchart": "latest",