Update README.rst

Author: mehaase

README.rst

@@ -36,5 +36,5 @@ Documentation can be found `here <https://sklearn-crfsuite.readthedocs.io>`_.
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 .. image:: https://hyperiongray.s3.amazonaws.com/define-hg.svg
-	:target: https://hyperiongray.com/?pk_campaign=github&pk_kwd=sklearn-crfsuite
+	:target: https://www.hyperiongray.com/?pk_campaign=github&pk_kwd=sklearn-crfsuite
 	:alt: define hyperiongray