Add links to DREAM.3D and pymicro docs to our related projects docs

Signed-off-by: Håkon Wiik Ånes <[email protected]>

doc/user/related_projects.rst

@@ -24,6 +24,8 @@ find useful:
   orix depends on numpy-quaternion for quaternion multiplication.
 - `texture <https://github.com/usnistgov/texture>`_: Python scripts for analysis of
   crystallographic texture.
-- pymicro: Python package to work with material microstructures and 3D data sets.
-- Dream3D: C++ library to reconstruct, instatiate, quantify, mesh, handle and visualize
-  multidimensional (3D), multimodal data (mainly EBSD orientation data).
+- `pymicro <https://pymicro.readthedocs.io>`_`: Python package to work with material
+  microstructures and 3D data sets.
+- `DREAM.3D <https://dream3d.io/>`_`: C++ library to reconstruct, instatiate, quantify,
+  mesh, handle and visualize multidimensional (3D), multimodal data (mainly EBSD
+  orientation data).