Update the link for the User Reference Guide to point to the new location

Author: abbeyj

README.html

@@ -64,7 +64,7 @@ <h2>Compiling</h2>
 <h2>Usage</h2>
 <div>The specifics of the dialect of BASIC used by the TI-99/4A are
 available in the original
-<a href="ftp://ftp.whtech.com/datasheets%20&amp;%20manuals/99-4A%20Computer/99-4A%20User%20Reference%20Guide.pdf">User's
+<a href="ftp://ftp.whtech.com/datasheets%20and%20manuals/99-4A%20Computer/99-4A%20User%20Reference%20Guide.pdf">User's
 Reference Guide</a>.  The Cassette, Disk, and Sound devices are not
 currently emulated.  You can use tibasic in interactive mode by just running the binary
 without parameters, or you can specify an ASCII-encoded BASIC program