Update RELEASE_NOTES.md for version 1.0.0 release

Author: wkliao

RELEASE_NOTES.md

@@ -1,14 +1,14 @@
 # PnetCDF-Python Release Notes
 
-### Version 1.0.0.pre (September 12, 2024)
+### Version 1.0.0 (November 12, 2024)
 
 * First release of PnetCDF-Python package, a Python interface to PnetCDF-C
   parallel I/O library.
-* User Guide is provided in https://pnetcdf-python.readthedocs.io/en/latest
-* A high-level comparison between Python packages of PnetCDF and NetCDF4 is
-  described in file `docs/nc4_vs_pnetcdf.md`
+* User Guide is available in https://pnetcdf-python.readthedocs.io/en/latest
+* Information about a high-level comparison between Python packages of PnetCDF
+  and NetCDF4 is described in file `docs/nc4_vs_pnetcdf.md`
 * Several python example programs are available in folder `examples`.
-* Source codes are stored in its github repository at
+* Source code repository at github.com is at
   https://github.com/Parallel-NetCDF/PnetCDF-Python