Update README.rst

README.rst

@@ -21,7 +21,7 @@ WebbPSF: Simulated Point Spread Functions for the James Webb and Nancy Grace Rom
 .. image:: https://img.shields.io/badge/ascl-1504.007-blue.svg?colorB=262255
    :target: http://ascl.net/1504.007
 
-WebbPSF produces simulated PSFs for the James Webb Space Telescope, NASA's next
+WebbPSF produces simulated PSFs for the James Webb Space Telescope, NASA's
 flagship infrared space telescope. WebbPSF can simulate images for any of the
 four science instruments plus the fine guidance sensor, including both direct
 imaging and coronagraphic modes.
@@ -37,4 +37,4 @@ Documentation can be found online at https://webbpsf.readthedocs.io
 WebbPSF requires input data for its simulations, including optical path
 difference (OPD) maps, filter transmission curves, and coronagraph Lyot mask
 shapes. These data files are not included in this source distribution.
-Please see the documentation to download the required data files.
+Please see the documentation to download the required data files.