Change mvvm package path to relative.

Author: ChebanovDD

samples/Unity.Mvvm.ToDoList/Packages/manifest.json

@@ -1,6 +1,6 @@
 {
   "dependencies": {
-    "com.chebanovdd.unitymvvmtoolkit": "file:D:/Projects/Rider/UnityMvvmToolkit/src/UnityMvvmToolkit.UnityPackage/Assets/Plugins/UnityMvvmToolkit",
+    "com.chebanovdd.unitymvvmtoolkit": "file:../../../src/UnityMvvmToolkit.UnityPackage/Assets/Plugins/UnityMvvmToolkit",
     "com.cysharp.unitask": "https://github.com/Cysharp/UniTask.git?path=src/UniTask/Assets/Plugins/UniTask",
     "com.unity.collab-proxy": "1.17.2",
     "com.unity.feature.2d": "1.0.0",

samples/Unity.Mvvm.ToDoList/Packages/packages-lock.json

@@ -1,7 +1,7 @@
 {
   "dependencies": {
     "com.chebanovdd.unitymvvmtoolkit": {
-      "version": "file:D:/Projects/Rider/UnityMvvmToolkit/src/UnityMvvmToolkit.UnityPackage/Assets/Plugins/UnityMvvmToolkit",
+      "version": "file:../../../src/UnityMvvmToolkit.UnityPackage/Assets/Plugins/UnityMvvmToolkit",
       "depth": 0,
       "source": "local",
       "dependencies": {}