Update RELEASES.md

Author: chaosink

RELEASES.md

@@ -17,8 +17,8 @@
 - Backend version of `ot.partial` and `ot.smooth` (PR #388)
 - Added argument for warmstart of dual potentials in Sinkhorn-based methods in `ot.bregman` (PR #437)
 - Add parameters method in `ot.da.SinkhornTransport` (PR #440)
-- `ot.dr` now uses the new Pymanopt API and POT is compatible with current
-  Pymanopt (PR #443)
+- `ot.dr` now uses the new Pymanopt API and POT is compatible with current Pymanopt (PR #443)
+- Remove the redundant `nx.abs()` at the end of `wasserstein_1d()` (PR #448)
 
 #### Closed issues