update for stv680 backend text

doc/sane.man

@@ -433,11 +433,6 @@ The sane-st400 backend provides access to Siemens ST400 and ST800. See
 .BR sane-st400 (5)
 for details.
 .TP
-.B stv680
-The sane-st680 backend provides access to webcams with a stv680 chip. See
-.BR sane-st680 (5)
-for details.
-.TP
 .B tamarack
 The SANE tamarack backend supports Tamarack Artiscan flatbed scanners. See
 .BR sane-tamarack (5)
@@ -511,6 +506,11 @@ backend.  See
 .B qcam
 Backend for Connectix QuickCam cameras. See 
 .BR sane-qcam (5).
+.TP
+.B stv680
+The sane-st680 backend provides access to webcams with a stv680 chip. See
+.BR sane-st680 (5)
+for details.
 .PP
 Also, have a look at the backend information page at
 .I http://www.sane-project.org/sane-supported-devices.html
@@ -846,6 +846,7 @@ for details).
 .BR sane-snapscan (5),
 .BR sane-sp15c (5),
 .BR sane-st400 (5),
+.BR sane-stv680 (5),
 .BR sane-tamarack (5),
 .BR sane-teco1 (5),
 .BR sane-teco2 (5),