Standardize format: 'no tools' → 'w/o tools'

.eval_results/hle.yaml

@@ -5,5 +5,5 @@
   date: '2026-01-28'
   source:
     url: https://huggingface.co/XiaomiMiMo/MiMo-V2-Flash
-    name: Model Card (no tools)
+    name: Model Card (w/o tools)
     user: burtenshaw