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Describe the bug

THStack::Paint function documentation has a broken link:
https://root.cern/doc/master/classTHStack.html#HS00

I guess this was overlooked when reformatting here: 830ba53#diff-82b523bd29fb2b8da2dc50dfdb01386a70504d8de4b2dc71fd8d6ac14354b5a6

Expected behavior

Fix link using this:

\anchor HS00
### Stack painting
...
/// [Paint the list of histograms.](\ref HS00)

To Reproduce

Go to
https://root.cern/doc/master/classTHStack.html#a6294f58bebce2f1ce5d6dced8e22bc1e
and click on Paint list of histograms