package/python-pyparsing: update link to project

Old link no longer works, so replace that with link to GitHub.

Signed-off-by: Marcin Niestroj <m.niestroj@grinn-global.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/python-pyparsing/Config.in

@@ -7,4 +7,4 @@ config BR2_PACKAGE_PYTHON_PYPARSING
 	  module provides a library of classes that client code uses
 	  to construct the grammar directly in Python code.
 
-	  http://pyparsing.wikispaces.com/
+	  https://github.com/pyparsing/pyparsing/