Fix broken reference links

docs/source/input_hash_cmds.rst

@@ -359,6 +359,8 @@ For example for a soil with sand fraction 0.5, clay fraction 0.5, bulk density :
 
     Further information on the Peplinski soil model and our implementation can be found in 'Giannakis, I. (2016). Realistic numerical modelling of Ground Penetrating Radar for landmine detection. The University of Edinburgh, United Kingdom. (http://hdl.handle.net/1842/20449)'
 
+.. _object-construction-commands:
+
 Object construction commands
 ============================
 

toolboxes/AustinManWoman/README.rst

@@ -74,7 +74,7 @@ To insert a 2x2x2mm :math:`^3` AustinMan with the lower left corner 40mm from th
 
     #geometry_objects_read: 0.04 0.04 0.04 ../toolboxes/AustinManWoman/AustinMan_v2.3_2x2x2.h5 ../toolboxes/AustinManWoman/AustinManWoman_materials_dispersive.txt
 
-For further information on the `#geometry_objects_read` see the section on object contruction commands in the :ref:`Input commands section <commands>`.
+For further information on the ``#geometry_objects_read`` command see the section on :ref:`object contruction commands<object-construction-commands>`.
 
 .. figure:: ../../images_shared/AustinMan.png
     :width: 300 px

toolboxes/LandmineModels/README.rst

@@ -74,7 +74,7 @@ The input file for inserting the PMN landmine, with the lower left corner 10mm f
     #geometry_objects_read: 0.010 0.010 0.010 ../toolboxes/LandmineModels/PMN_1x1x1.h5 ../toolboxes/LandmineModels/PMN_materials.txt
     #geometry_view: 0 0 0 0.136 0.176 0.070 0.001 0.001 0.001 landmine_PMN_fs n
 
-For further information on the ``#geometry_objects_read`` see the section on object contruction commands in the :ref:`Input commands section <commands>`.
+For further information on the ``#geometry_objects_read`` command see the section on :ref:`object contruction commands<object-construction-commands>`.
 
 .. figure:: ../../images_shared/PMA.png
     :width: 600 px