Fix bad commit

Packages/manifest.json

 {
   "dependencies": {
-    "com.unity.animation.rigging": "file:../../animation-rigging-package-siggraph2019",
+    "com.unity.animation.rigging": "file:../../com.unity.animation.rigging",
     "com.unity.collab-proxy": "1.2.16",
     "com.unity.ext.nunit": "1.0.0",
     "com.unity.ide.rider": "1.0.8",