chore: update repo url and description

Author: NathanWalker

build/npm/runtime_package.json

@@ -1,6 +1,6 @@
 {
   "name": "tns-ios",
-  "description": "NativeScript Runtime for iOS",
+  "description": "NativeScript for iOS using JavaScriptCore",
   "version": "6.5.6",
   "keywords": [
     "NativeScript",
@@ -9,7 +9,7 @@
   ],
   "repository": {
     "type": "git",
-    "url": "https://github.com/NativeScript/ios-runtime"
+    "url": "https://github.com/NativeScript/ios-jsc"
   },
   "author": {
     "name": "NativeScript",