ffx component run should provide a collection

In the future,`ffx component run` will not default to the using the `/core/ffx-laboratory` collection. Updated the run commands to include this.

Author: diminishedprime

src/doc/rustc/src/platform-support/fuchsia.md

@@ -562,6 +562,7 @@ Finally, run the component:
 
 ```sh
 ${SDK_PATH}/tools/${ARCH}/ffx component run \
+    /core/ffx-laboratory:hello_fuchsia \
     fuchsia-pkg://hello-fuchsia/hello_fuchsia_manifest#meta/hello_fuchsia.cm
 ```
 
@@ -571,6 +572,7 @@ passed.
 ```sh
 ${SDK_PATH}/tools/${ARCH}/ffx component run \
     --recreate \
+    /core/ffx-laboratory:hello_fuchsia \
     fuchsia-pkg://hello-fuchsia/hello_fuchsia_manifest#meta/hello_fuchsia.cm
 ```