docs: add disclaimer about testing + fix line breaks

README.md

@@ -16,24 +16,34 @@ Unofficial Windows-compatible wheel of flash-attention for Windows<br>
 **Python 3.11 & 3.12 & 3.13 versions only**.
 
 ## Overview
+
 This repository provides **Windows-compatible wheels** for FlashAttention-2 that are not officially distributed.<br>
 Pre-built version: lash_attn-2 with **Python 3.11 & 3.12 & 3.13** support.
 
 ## Key Features
+
 - ✅ Native Windows support (Python 3.11 & 3.12 & 3.13)
 - ⚡ FlashAttention-2
 
 ## Changelog
+
 - 15.11.2025 Uploaded v2.8.3 based on PyTorch 2.9.1+cu130
 - 12.02.2026 Uploaded v2.8.3 based on PyTorch 2.10.0+cu130
 - 29.03.2026 Uploaded v2.8.3 based on PyTorch 2.11.0+cu130
 - 13.05.2026 Uploaded **v2.9.0** based on PyTorch 2.10.0+cu130 — **unofficial fork-only build** (not an official release). Includes FA2 A-1/A-2 optimizations.
 
 ## About v2.9.0
+
 **v2.9.0 is not an official FlashAttention release.** It is an independent fork build that continues FA2 kernel development while upstream focuses on FA3/F4.
 
 - **Optimization plan (GitHub):** https://github.com/ussoewwin/flash-attention/blob/main/AI/FA2_BACKPORT_FROM_FA4_PLAN.md
 - **Kernel change notes (GitHub):** https://github.com/ussoewwin/flash-attention/blob/main/md/FA2_CHANGES_v1.1.md
 - **Fork changelog (GitHub):** https://github.com/ussoewwin/flash-attention/blob/main/md/CHANGELOG.md
 
+## Disclaimer
+
+- **No performance benchmarks** have been run on this build.
+- **No multi-environment testing** has been performed.
+- This is an **unofficial fork build**. Use at your own risk.
+
 ※Unofficial built version!! It works correctly in my environment, but I am not sure that will work in yours.