fix: typo in workflow

Author: snorrees

assets/inject/semver-workflow/.github/workflows/main.yml

@@ -19,7 +19,7 @@ on:
         description: Release new version
         required: true
         default: false
-        type: boolean`
+        type: boolean
 
 concurrency:
   # On PRs builds will cancel if new pushes happen before the CI completes, as it defines `github.head_ref` and gives it the name of the branch the PR wants to merge into