chore: change project short description

The short description in the pyproject.toml file indicates this project is a fork of itself, which is inaccurate. The text originates from the "envector" fork.

Author: mhogan-nwra

pyproject.toml

@@ -1,7 +1,7 @@
 [project]
 name = "nvector"
 dynamic = ["version"]
-description = "The nvector library is a suite of tools written in Python to solve geographical position calculations forked from nvector."
+description = "The nvector library is a suite of tools written in Python to solve geographical position calculations."
 authors = [
     {name = "Kenneth Gade, FFI"},
     {name = "Kristian Svartveit, FFI"},