desktop/fvwm95: Replaced backtick cmdsub.

Signed-off-by: B. Watson <urchlay@slackware.uk>

Signed-off-by: Willy Sudiarto Raharjo <willysr@slackbuilds.org>

desktop/fvwm95/fvwm95.SlackBuild

@@ -109,7 +109,7 @@ mv $PKG/usr/man/man1/xpmroot.1 $PKG/usr/man/man1/xpmroot95.1
 
 # rename manpages
 for m in $PKG/usr/man/man1/Fvwm* ; do
-  mv $m `echo $m | sed -r 's/Fvwm/Fvwm95/'`
+  mv $m $( echo $m | sed -r 's/Fvwm/Fvwm95/' )
 done
 
 find $PKG -print0 | xargs -0 file | grep -e "executable" -e "shared object" | grep ELF \