chore: update docs for updating action v1

Author: sweatybridge

README.md

@@ -114,17 +114,8 @@ $ npm test
 
 Actions are run from GitHub repos so we will checkin the packed dist folder.
 
-Then run [ncc](https://github.com/zeit/ncc) and push the results:
-
-```bash
-$ npm run all
-$ git add dist
-$ git commit -a -m "Update dependencies"
-$ git tag -f v1
-$ git push -f --tags
-```
-
-Note: We recommend using the `--license` option for ncc, which will create a license file for all of the production node modules used in your project.
+1. Create a new GitHub release
+2. Rebase `v1` branch on `main`
 
 Your action is now published! :rocket: