Update docs.yml

Author: PProfizi

.github/workflows/docs.yml

@@ -11,7 +11,7 @@ on:
       ANSYS_VERSION:
         required: false
         type: string
-        default: vars.ANSYS_VERSION_DEFAULT
+        default: ${{ vars.ANSYS_VERSION_DEFAULT }}
       standalone_suffix:
         description: "Suffix of the branch on standalone"
         required: false
@@ -34,7 +34,7 @@ on:
         description: "ANSYS version"
         required: true
         type: string
-        default: vars.ANSYS_VERSION_DEFAULT
+        default: ${{ vars.ANSYS_VERSION_DEFAULT }}
       standalone_suffix:
         description: "Suffix of the branch on standalone"
         required: false