Update SMOG2_usage.rst

Author: contessoto

docs/source/Tutorials/SMOG2_usage.rst

@@ -5,7 +5,7 @@ Using SMOG2 to generate  C-alpha and All-Atom Structure-Based models
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-This tutorial should take between 5 to 10 minutes to complete. Here, we will use the **SMOG2** software pacakge to generate the SBM (Structure-Based Model) input files that will be used to perform a simulation with **OpenSMOG**. To install SMOG2, please check the installation notes in the SMOG 2 user manual, or use the guide `here <https://opensmog.readthedocs.io/en/latest/GettingStarted/install.html#installing-smog2>`_. Details of SMOG2 usage and options are described in the `manual <https://smog-server.org/smog2/>`_. It is assumed that the executable **smog2** is in your path.
+This tutorial should take between 5 to 10 minutes to complete. Here, we will use the **SMOG2** software pacakge to generate the SBM (Structure-Based Model) input files that will be used to perform a simulation with **OpenSMOG**. To install SMOG2, please check the installation notes in the SMOG 2 user manual, or use the guide `here <https://opensmog.readthedocs.io/en/latest/GettingStarted/install.html#installing-smog2>`_. First, download SMOG2 package at the `SMOG-SERVER <https://smog-server.org/smog2/>`_. Details of SMOG2 usage and options are described in the `manual <https://smog-server.org/smog2/>`_. It is assumed that the executable **smog2** is in your path.
 
 
 Preparing your PDB file