Updated the user guides of mu/.

guide/mu/guide.dtx

@@ -147,8 +147,8 @@
   \TeX\ Live can be acquired from
   \url{http://www.tug.org/texlive}.}, which can be installed on
   both Unix and Windows operating systems. The advantages of
-  Mik\TeX\ include refined graphical user interface and the ability
-  to install new packages on the fly.
+  Mik\TeX\ over \TeX Live include refined graphical user interface
+  and the ability to install new packages on the fly.
   
   Along with Mik\TeX{}, you will also need to install a Perl
   interpreter, such as Strawberry Perl\footnote{Strawberry Perl can