manual.texi Fix typos in books section.

@emph{Professional Linux Programming}

@multitable @columnfractions .3 .7

@item Available @tab            @uref{http://shop.barnesandnoble.com/bookSearch/isbnInquiry.asp?isbn=1861004281, Barnes and Noble}

@item Available @tab            @uref{http://service.bfast.com/bfast/click?bfmid=2181&sourceid=34233559&bfpid=1861003013&bfmtype=book, Barnes and Noble}

@item Publisher @tab            Wrox Press, Inc.

@item Authors   @tab            N/A

@item Pub Date  @tab            September 2000

@emph{PHP and MySQL Web Development}

@multitable @columnfractions .3 .7

@item Available @tab            @uref{http://service.bfast.com/bfast/click?bfmid=2181&sourceid=34233559&bfpid=0672317842&bfmtype=book, Barnes and Noble}

@item Publisher @tab            N/A

@item Authors   @tab            William Jason Gilmore

@item Publisher @tab            Sams

@item Authors   @tab            Luke Welling, Laura Thomson

@item Pub Date  @tab            November 2000

@item ISBN      @tab            0672317842

@item Pages     @tab            N/A

@item Pages     @tab            700

@item Price     @tab            $49.99

@end multitable