update readme

README.rst

@@ -3,4 +3,4 @@ Bayesian Analysis of Galaxies for Physical Inference and Parameter EStimation
 
 Bagpipes is a state of the art code for generating realistic model galaxy spectra and fitting these to spectroscopic and photometric observations. For further information please see the Bagpipes documentation at `bagpipes.readthedocs.io <http://bagpipes.readthedocs.io>`_.
 
-Important note: The code will not run from simply cloning this repository. This is because the large model grid files aren't included. Instead download the latest version from the `installation page <http://bagpipes.readthedocs.io/en/stable/installation.html>`_ of the documentation.
+Important note: The code will not run from simply cloning this repository. This is because the large model grid files aren't included. Instead download the latest version from the `installation page <http://bagpipes.readthedocs.io/en/latest/installation.html>`_ of the documentation.