Bump to latest ohif-vtk-extension

package.json

@@ -82,7 +82,7 @@
     "ohif-dicom-html-extension": "^0.0.2",
     "ohif-dicom-microscopy-extension": "^0.0.5",
     "ohif-dicom-pdf-extension": "^0.0.6",
-    "ohif-vtk-extension": "^0.0.1",
+    "@ohif/extension-vtk": "0.0.2",
     "oidc-client": "1.7.x",
     "prop-types": "^15.6.2",
     "react-bootstrap-modal": "^4.2.0",