Updated ganga workaround for DaVinci

doc/tutorials/running.rst

@@ -93,8 +93,11 @@ Ganga does not support ``lbexec``, yet! A workaround has been prepared, as follo
         import yaml
         from DaVinci import Options
         with open("options.yaml", "r") as f:
-            options = Options(**yaml.safe_loads(f))
-        print_decay_tree(options)  # make sure to rename print_decay_tree to whatever your function is called
+            options = Options(**yaml.safe_load(f))
+        with options.apply_binds():  # required as gaudirun.py does not apply binds!
+            print_decay_tree(options)  # make sure to rename print_decay_tree to whatever your function is called
+
+The function `apply_binds()`, a member function of the LbExec `Options` class [https://gitlab.cern.ch/lhcb/LHCb/-/blob/master/GaudiConf/python/GaudiConf/LbExec/options.py](LbExec/options.py), is automatically called when running DaVinci through `lbexec`. When running through `gaudirun.py` the binds must be applied within the DaVinci options, otherwise DaVinci will encounter reconstruction issues.
 
 2. Add ``my_module.py`` to your ``GaudiExec`` application ``options`` list, and ``options.yaml`` to your ``job.inputfiles`` (input sandbox.)