DOC: minor README tweak, rewording one sentence

Author: lesteve

README.rst

@@ -6,7 +6,7 @@ meson-python
 ============
 
 ``meson-python`` is a Python build backend built on top of the Meson__
-build system. It enables to use Meson for the configuration and build
+build system. It enables using Meson for the configuration and build
 steps of Python packages. Meson is an open source build system meant
 to be both extremely fast, and, even more importantly, as user
 friendly as possible. ``meson-python`` is best suited for building