use proper scope

Author: StephenHodgson

Diff for: action.yaml

@@ -33,7 +33,7 @@ runs:
         name: 'project-validation'
         editor-path: '${{ steps.unity-validate.outputs.editor-path }}'
         project-path: '${{ steps.unity-validate.outputs.project-path }}'
-        args: '-quit -batchmode -executeMethod XRTK.Editor.BuildPipeline.UnityPlayerBuildTools.ValidateProject ${{ additional-valiate-args }}'
+        args: '-quit -batchmode -executeMethod XRTK.Editor.BuildPipeline.UnityPlayerBuildTools.ValidateProject ${{ inputs.additional-valiate-args }}'
 
     - uses: xrtk/unity-action@main
       name: '${{ inputs.build-target }}-Tests'
@@ -42,7 +42,7 @@ runs:
         editor-path: '${{ steps.unity-validate.outputs.editor-path }}'
         project-path: '${{ steps.unity-validate.outputs.project-path }}'
         build-target: '${{ inputs.build-target }}'
-        args: '-batchmode -runEditorTests ${{ additional-test-args }}'
+        args: '-batchmode -runEditorTests ${{ inputs.additional-test-args }}'
 
     - uses: xrtk/unity-action@main
       name: '${{ inputs.build-target }}-Build'
@@ -51,7 +51,7 @@ runs:
         editor-path: '${{ steps.unity-validate.outputs.editor-path }}'
         project-path: '${{ steps.unity-validate.outputs.project-path }}'
         build-target: '${{ inputs.build-target }}'
-        args: '-quit -batchmode -executeMethod XRTK.Editor.BuildPipeline.UnityPlayerBuildTools.StartCommandLineBuild ${{ additional-build-args }}'
+        args: '-quit -batchmode -executeMethod XRTK.Editor.BuildPipeline.UnityPlayerBuildTools.StartCommandLineBuild ${{ inputs.additional-build-args }}'
 
     - name: Zip Artifacts
       if: always()