Update NEWS.md

Author: 1-Bart-1

NEWS.md

@@ -7,4 +7,4 @@ This project is based on version 1.0 of the Python project [Vortex-Step-Method](
 - automatic creation of polars using Xfoil.jl was added (see: [#43](https://github.com/Albatross-Kite-Transport/VortexStepMethod.jl/pull/43))
 - a ram-air kite example was added
 - `Umag` was replaced with `v_a` as variable name for the norm of the apparent wind speed
-- allocations were reduced a lot
+- memory allocations where significantly reduced