docs: update release instructions (#30)

DEVELOPMENT.md

@@ -12,14 +12,22 @@ npm run package
 
 ## Releases
 
-1. Draft a new release on GitHub.
+1. Create a semver tag pointing to the commit you want to release. E.g. to create `v1.4.4` from tip-of-tree:
+```
+git checkout master
+git pull upstream master
+git tag v1.4.4
+git push upstream v1.4.4
+```
+1. Create Playwrgight PR with updated reference to the GitHub action (change `playwright-github-action@v1` to the newly created version `playwright-github-action@v1.4.4`) and make sure the tests are passing. Do not commit the change.
+1. Draft a new release on GitHub using the semver tag.
 1. Update the sliding tag (`v1`) to point to the new release commit. Note that existing users relying on the `v1` will get auto-updated.
 
 ### Updating sliding tag
 
-Follow these steps to move the `v1` to a new commit `1e2d565`.
+Follow these steps to move the `v1` to a new version `v1.4.4`.
 
 ```
-git tag -f v1 1e2d565
+git tag -f v1 v1.4.4
 git push -f upstream v1
 ```