chore(helm): update CPU chart keyword to TPU

Signed-off-by: maggiezha <42832776+maggiezha@users.noreply.github.com>

Author: maggiezha

deploy/helm/nemoclaw-cpu/Chart.yaml

@@ -9,6 +9,6 @@ appVersion: "2026.05.27"
 keywords:
   - nemoclaw
   - inference-hub
-  - gpu
+  - tpu
 maintainers:
   - name: maggiezha