adjust capitalization of polyethelene glycol

Author: akohlmey

lammps-tutorials.tex

@@ -1770,14 +1770,14 @@ \subsection{Tutorial 3: Polymer in water}
 \begin{figure}
 \centering
 \includegraphics[width=0.55\linewidth]{PEG}
-\caption{The polymer molecule (PEG - PolyEthylene Glycol) solvated in water as
+\caption{The polymer molecule (PEG - polyethylene glycol) solvated in water as
 simulated during \hyperref[all-atom-label]{Tutorial 3}.  Water molecules are
 represented as a transparent continuum field for clarity.}
 \label{fig:PEG}
 \end{figure}
 
 \noindent The goal of this tutorial is to use LAMMPS to solvate a small hydrophilic
-polymer (PEG - PolyEthylene Glycol) in a reservoir of water (Fig.~\ref{fig:PEG}).
+polymer (PEG - polyethylene glycol) in a reservoir of water (Fig.~\ref{fig:PEG}).
 Once the water reservoir is properly equilibrated at the desired temperature and
 pressure, the polymer molecule is added and a constant stretching force is applied
 to both ends of the polymer.  The evolution of the polymer length is measured as