Fix trademark symbol (#8)

Replace HTML Entity `™` with unicode char `™`

Author: mkoistinen

pyproject.toml

@@ -6,7 +6,7 @@ build-backend = "setuptools.build_meta"
 name = "howso-engine"
 dynamic = ["version"]
 readme = "README.md"
-description = 'The Howso Engine™ is a natively and fully explainable ML engine, serving as an alternative to black box AI neural networks.'
+description = 'The Howso Engine™ is a natively and fully explainable ML engine, serving as an alternative to black box AI neural networks.'
 authors = [
     {name = "Howso Incorporated"},
     {email = "[email protected]"},