doc/intro.xml: Replace a link to figure 1 with an xref.

diff --git a/doc/intro.xml b/doc/intro.xml
index 5c52de6168c2f94a02e067207a79c6c9348a50a3..ac9560d3577d5f1935ceef465fcc5e59819b0bfb 100644 (file)
--- a/doc/intro.xml
+++ b/doc/intro.xml
@@ -446,7 +446,7 @@
                                                For example, some A/D hardware must <emphasis>multiplex</emphasis>
                                                the conversions from different input channels onto
                                                one single A/D converter.  Thus the conversions are done serially
-                                               in time (as shown on the <link linkend="fig-acq-seq">Figure</link>).
+                                               in time (as shown in <xref linkend="fig-acq-seq"/>).
                                                Other cards have the hardware to do two or more acquisitions in
                                                parallel, and can perform all the conversions in a scan simultaneously.
                                                The begin of each conversion is <quote>triggered</quote> by