Simplify /snapit message

Author: gonzaloriestra

.github/workflows/snapit.yml

@@ -26,16 +26,11 @@ jobs:
       - name: Force snapshot changeset
         run: "mv .changeset/force-snapshot-build.md.ignore .changeset/force-snapshot-build.md"
       - name: Create snapshot version
-        uses: Shopify/snapit@8ff75631e13281a35f85b373bcadfa2fa12bb21e # [email protected]
+        uses: Shopify/snapit@registry-and-package-manager
         with:
           global_install: 'true'
           github_comment_included_packages: '@shopify/cli'
           custom_message_suffix: "
-            > [!TIP]
-
-            > If you get an `ETARGET` error, install it with NPM and the flag `--@shopify:registry=https://registry.npmjs.org`
-
-
             > [!CAUTION]
 
             > After installing, validate the version by running just `shopify` in your terminal.
@@ -44,6 +39,8 @@ jobs:
 
             > Use `which shopify` to find out which one you are running and uninstall it."
           build_script: "pnpm nx run-many --target=bundle --all --skip-nx-cache --output-style=stream && pnpm refresh-manifests"
+          package_manager: 'npm'
+          shopify_registry: 'https://registry.npmjs.org'
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           NPM_TOKEN: ${{ secrets.NPM_TOKEN }}