Added changelogUrl and documentationUrl to the packages

Author: De-Panther

Packages/webxr-interactions/package.json

@@ -5,6 +5,8 @@
   "unity": "2019.4",
   "unityRelease": "7f1",
   "description": "WebXR interactions components and samples for WebXR Export",
+  "changelogUrl": "https://github.com/De-Panther/unity-webxr-export/blob/master/Packages/webxr-interactions/CHANGELOG.md",
+  "documentationUrl": "https://github.com/De-Panther/unity-webxr-export/tree/master/Documentation",
   "keywords": [
     "webxr",
     "xr",

Packages/webxr/package.json

@@ -5,6 +5,8 @@
   "unity": "2019.4",
   "unityRelease": "7f1",
   "description": "Export Unity projects to WebXR",
+  "changelogUrl": "https://github.com/De-Panther/unity-webxr-export/blob/master/Packages/webxr/CHANGELOG.md",
+  "documentationUrl": "https://github.com/De-Panther/unity-webxr-export/tree/master/Documentation",
   "keywords": [
     "webxr",
     "xr",