[CI] Add helper values to API job (#2788)

* [CI] Add helper values to API job

* Review feedback

* Update .github/workflows/api_refs.yaml

* Update .github/workflows/api_refs.yaml

Co-authored-by: Adrien Dupuis <61695653+adriendupuis@users.noreply.github.com>

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Co-authored-by: Adrien Dupuis <61695653+adriendupuis@users.noreply.github.com>

Author: mnocon

.github/workflows/api_refs.yaml

@@ -4,7 +4,7 @@ on:
     workflow_dispatch:
         inputs:
             version:
-                description: 'Released version'
+                description: 'Released version tag (for example: v4.6.21 or v5.0.0)'
                 required: true
                 type: string