build: move the docs version updates to the posthook script

Co-authored-by: Michael Brooks <michael@michaelbrooks.ca>

Author: zimeg

package.json

@@ -11,7 +11,7 @@
     "lint:fix": "biome check --write",
     "lint": "biome check",
     "test": "c8 mocha test/*.spec.js",
-    "version": "TAG=\"v$(npm pkg get version | jq -r)\" && grep -rl 'slackapi/slack-github-action@v' ./docs ./example-workflows | xargs sed -i \"s|slackapi/slack-github-action@v.*|slackapi/slack-github-action@${TAG}|g\""
+    "postversion": "TAG=\"v$(npm pkg get version | jq -r)\" && grep -rl 'slackapi/slack-github-action@v' ./docs ./example-workflows | xargs sed -i \"s|slackapi/slack-github-action@v.*|slackapi/slack-github-action@${TAG}|g\""
   },
   "repository": {
     "type": "git",