Update name and dep name in pxt.json

Author: microbit-robert

pxt.json

@@ -1,10 +1,10 @@
 {
-    "name": "Machine Learning",
+    "name": "machine-learning",
     "version": "0.4.0",
     "description": "Machine learning extension to support the micro:bit machine learning tool",
     "dependencies": {
         "core": "*",
-        "ml-runner-poc": "github:microbit-foundation/pxt-ml-runner-poc#v0.3.9"
+        "machine-learning-runner": "github:microbit-foundation/pxt-microbit-ml-runner#v0.3.9"
     },
     "files": [
         "README.md",