Fix a url mistake in mail content.
Fix a url mistake in mail content.

JIRA: PDC-1441

pombredanne/product-definition-center,pombredanne/product-definition-center,release-engineering/product-definition-center,release-engineering/product-definition-center,release-engineering/product-definition-center,release-engineering/product-definition-center,product-definition-center/product-definition-center,product-definition-center/product-definition-center,pombredanne/product-definition-center,pombredanne/product-definition-center,product-definition-center/product-definition-center,product-definition-center/product-definition-center