Fix the openwebwork.org link in hardcopy.

The `webwork2.sty` file currently creates this link using the `\url`
command.  That command attempts to detect the link type.  In this case
that results in a file link.  Depending on the PDF viewer used, that
results in different behavior.  In Firefox's PDF viewer it behaves as if
it is not a link at all, but just text.  Clicking on it does nothing. In
Google Chrome's PDF viewer or Evince it is a link, but clicking on it
results in a message being displayed that the file does not exist.

So this switches to using the `\href` command instead. That requires
that both the link URL and link text explicitly be given, but reliably
results in a working link.

Author: drgrice1

assets/tex/webwork2.sty

@@ -95,7 +95,7 @@
 \small\sffamily Generated by WeBWorK, \copyright~The~WeBWorK~Project.%
 }
 \newcommand{\webworkSetCopyrightFooterRight}{%
-\url{openwebwork.org}%
+\href{https://openwebwork.org}{openwebwork.org}%
 }
 
 % Define the macro that declares the copyright