integrations: update recommended method for running astro add

[delucis]

Changes

• Updates astro add instructions in integrations READMES to use npm run astro add ... or pnpm run astro add ... instead of npx/pnpx

• I assume no changes are needed for yarn as it already runs a named script when found so yarn astro add ... was and will be correct.

• My perennial dilemma: should this include a patch changeset? Seems kind of drastic for a docs change this small.

Testing

N/A

Docs

YUP

[changeset-bot]

⚠️ No Changeset found

Latest commit: 41cef05

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

This PR includes no changesets

When changesets are added to this PR, you'll see the packages that this PR includes changesets for and the associated semver types

Click here to learn what changesets are, and how to add one.

Click here if you're a maintainer who wants to add a changeset to this PR

[hippotastic]

For pnpm, I think it's even easier:

The exec/run part is optional when the command to be run is not in conflict with a builtin pnpm command, so you may also run:

pnpm astro ... - to execute Astro's CLI
pnpm dev - to run the dev script
pnpm build - to run the build script

I'm using this all the time.

[delucis]

Haha, double review with the same idea! Thanks — I’ll make that update.