fix rendering of code block RE: review comment

Author: JacksonBurns

documentation/source/users/rmg/installation/anacondaDeveloper.rst

@@ -82,7 +82,7 @@ Installation by Source Using Anaconda Environment for Unix-based Systems: Linux
     source ~/.zshrc
 
    NOTE: You may wish to forbid ``conda`` from installing from the Anaconda channels due to licensing restrictions.
-   The ``environment.yml`` file already forbids using default channels, but you may further add the file ``.condarc`` to your RMG-Py directory (or modify the ``.condarc`` in your home directory) with the following contents before running the ``conda env create`` command:
+   The ``environment.yml`` file already forbids using default channels, but you may further add the file ``.condarc`` to your RMG-Py directory (or modify the ``.condarc`` in your home directory) with the following contents before running the ``conda env create`` command: ::
 
      channels:
        - conda-forge