Format NL2Bash v2 dataset stats as bullets

nl2bash_v2/README.md

@@ -2,9 +2,18 @@
 
 ## Dataset stats
 
-**1,497 original tasks; 938 kept; 559 archived; 0 payloads changed from v1; 0 pending attempts.** Evaluated all **1,425 v1 tasks** with **5,700 recorded attempts** and **5,700 saved conversations**, including **2,911 successful attempts**. Images: **1 before, 1 now**.
-
-Based on [nl2bash_v1](https://huggingface.co/datasets/FWeindel/validated-tasks/tree/3abfc63260ef8ab59ac61274450310f650585bc9/nl2bash_v1) at revision `3abfc63260ef8ab59ac61274450310f650585bc9`. The 559 archived tasks comprise 72 earlier v1 exclusions and 487 tasks with no successful Coder attempt.
+- **Original tasks:** 1,497
+- **Kept:** 938
+- **Changed from v1:** 0 task payloads
+- **Archived:** 559 (487 with no Coder success and 72 earlier v1 exclusions)
+- **Pending attempts:** 0
+- **Evaluated tasks:** 1,425
+- **Recorded attempts:** 5,700
+- **Saved conversations:** 5,700
+- **Successful attempts:** 2,911
+- **Images:** 1 before, 1 now
+
+Based on [nl2bash_v1](https://huggingface.co/datasets/FWeindel/validated-tasks/tree/3abfc63260ef8ab59ac61274450310f650585bc9/nl2bash_v1) at revision `3abfc63260ef8ab59ac61274450310f650585bc9`.
 
 ## Dataset characteristics and changes from v1