package/python-gunicorn: replace utf-8 quote by ascii single quote

Signed-off-by: Peter Seiderer <ps.report@gmx.net>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/python-gunicorn/Config.in

@@ -3,8 +3,8 @@ config BR2_PACKAGE_PYTHON_GUNICORN
 	select BR2_PACKAGE_PYTHON_SSL if BR2_PACKAGE_PYTHON # runtime
 	select BR2_PACKAGE_PYTHON3_SSL if BR2_PACKAGE_PYTHON3 # runtime
 	help
-	  Gunicorn ‘Green Unicorn’ is a Python WSGI HTTP Server for
-	  UNIX. It’s a pre-fork worker model ported from Ruby’s
+	  Gunicorn 'Green Unicorn' is a Python WSGI HTTP Server for
+	  UNIX. It's a pre-fork worker model ported from Ruby's
 	  Unicorn project. The Gunicorn server is broadly compatible
 	  with various web frameworks, simply implemented, light on
 	  server resource usage, and fairly speedy.