Bump extension to version that includes help docs (#574)

Author: microbit-robert

src/makecode/__snapshots__/utils.test.ts.snap

@@ -5278,7 +5278,7 @@ ml.onStart(ml.event.Clap, function () {
     basic.showIcon(IconNames.EighthNote)
 })
 ",
-    "pxt.json": "{"name":"A project name","description":"","dependencies":{"core":"*","microphone":"*","radio":"*","machine-learning":"github:microbit-foundation/pxt-microbit-ml#v1.0.2"},"files":["main.ts","main.blocks","autogenerated.ts","dataset.json","pxt.json","README.md"],"preferredEditor":"blocksprj"}",
+    "pxt.json": "{"name":"A project name","description":"","dependencies":{"core":"*","microphone":"*","radio":"*","machine-learning":"github:microbit-foundation/pxt-microbit-ml#v1.0.3"},"files":["main.ts","main.blocks","autogenerated.ts","dataset.json","pxt.json","README.md"],"preferredEditor":"blocksprj"}",
   },
 }
 `;

src/makecode/utils.ts

@@ -26,7 +26,7 @@ export const filenames = {
 
 // Exported for testing.
 export const extensionName = "machine-learning";
-const extensionURL = "github:microbit-foundation/pxt-microbit-ml#v1.0.2";
+const extensionURL = "github:microbit-foundation/pxt-microbit-ml#v1.0.3";
 
 export const pxt = {
   name: untitledProjectName,