- Fix obsolete links

git-svn-id: http://root.cern.ch/svn/root/trunk@31382 27541ba8-7e3a-0410-8455-c3a389f83636

hist/hbook/doc/index.txt

@@ -2,19 +2,11 @@ This directory contains all the hbook interface classes.
 BEGIN_HTML
  See:
 <ul>
-<li><a href="http://root.cern.ch/root/HowtoConvert.html">How to convert Hbook/PAW files to ROOT
-      </A></li>
-<li><a href="ftp://root.cern.ch/root/doc/3Histograms.pdf">The Chapter about the Histogram classes in the Users Guide
-    </a></li>
-<li><a href="ftp://root.cern.ch/root/doc/5FittingHistograms.pdf">The Chapter about Fitting Histogram in the Users Guide
-    </a></li>
-<li><a href="http://root.cern.ch/root/HowtoHistogram.html">How to use the Histogram classes
-    </a></li>
-<li><a href="http://root.cern.ch/root/HowtoMerge.html">How to Merge files with histograms and Trees
-      </A></li>
-<li><a href="http://root.cern.ch/root/HowtoFit.html">How to Fit Histograms
-      </A></li>
-<li><a href="http://root.cern.ch/root/htmldoc/examples/peaks.C.html">How to Fit find peaks in histograms
-      </A></li>
-</ul>
+<li><a href="http://root.cern.ch/drupal/content/how-convert-hbookpaw-files-root-files">How to convert Hbook/PAW files to ROOT</a></li>
+<li><a href="ftp://root.cern.ch/root/doc/3Histograms.pdf">The Chapter about the Histogram classes in the Users Guide</a></li>
+<li><a href="ftp://root.cern.ch/root/doc/5FittingHistograms.pdf">The Chapter about Fitting Histogram in the Users Guide</a></li>
+<li><a href="http://root.cern.ch/drupal/content/how-use-histograms-classes">How to use the Histogram classes</a></li>
+<li><a href="http://root.cern.ch/drupal/content/how-merge-histograms-files">How to Merge files with histograms and Trees</a></li>
+<li><a href="http://root.cern.ch/drupal/content/how-fit-histograms-or-data-points">How to Fit Histograms</a></li>
+<li><a href="http://root.cern.ch/root/html/tutorials/spectrum/peaks.C.html">How to Fit find peaks in histograms</a></li>
 END_HTML