Tighten VP stability wording in version history

README.md

@@ -17,7 +17,7 @@ library_name: fcdm_diffae
 
 | Date | Change |
 |------|--------|
-| 2026-04-18 | Stabilize VP posterior and schedule alpha/sigma computation for extreme log-SNR values while keeping the public posterior interpolation path in float32 |
+| 2026-04-18 | Stabilize VP posterior and schedule alpha/sigma computation for extreme log-SNR values while keeping posterior interpolation in float32 |
 | 2026-04-10 | Refresh standalone package: fix bf16 RMSNorm precision path in both encoder and decoder to match training code; local export tooling now preserves fp32 EMA weights for future re-exports |
 | 2026-04-08 | Initial release |