update package description to better reflect its use case (#60)

Co-authored-by: Jeff Triplett <jefftriplett@users.noreply.github.com>

pyproject.toml

@@ -28,7 +28,7 @@ classifiers = [
   "Programming Language :: Python :: Implementation :: CPython",
 ]
 dependencies = ["django>=3.2"]
-description = "A Django app for relaying email to an external service via a database."
+description = "Centralize and relay email from multiple distributed Django projects to an internal SMTP server via a database queue."
 dynamic = ["version"]
 keywords = []
 license = "MIT"