updated figure 2 for consistency with text

Author: simongravelle

figures/GUI-1.png

@@ -526,15 +526,15 @@ \subsubsection{My first input}
 \caption{A screenshot of the \lammpsgui{} \guicmd{Editor} window during
   \hyperref[lennard-jones-label]{Tutorial 1}.  The coloring of the text
   is based on the syntax for LAMMPS input files.  The pop-up menu is the
-  context menu for right-clicking on the \lmpcmd{atom\_style} line.}
+  context menu for right-clicking on the \lmpcmd{units lj} command.}
 \label{fig:GUI-1}
 \end{figure}
 
 Each LAMMPS command is accompanied by extensive online documentation
 that details the different options for that command.  From the \lammpsgui{}
 editor buffer, you can access the documentation by
 right-clicking on a line containing a command (e.g.,~\lmpcmd{units lj}) and
-selecting \guicmd{View documentation for (\dots)}\,.  This action will
+selecting \guicmd{View Documentation for 'units'}.  This action will
 prompt your web browser to open the corresponding URL for the online manual.
 A screenshot of this context menu is shown in Fig.~\ref{fig:GUI-1}.