Fix organization names to match Gitea (uppercase)

Gitea organizations are UNSTIM, UAC, UNA, UP (uppercase).

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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

templates/node-api/template.yaml

@@ -33,10 +33,10 @@ spec:
           type: string
           description: Sélectionne ton université
           enum:
-            - unstim
-            - uac
-            - una
-            - up
+            - UNSTIM
+            - UAC
+            - UNA
+            - UP
           enumNames:
             - UNSTIM
             - UAC