replace LAMMPS\_GUI with \lammpsgui{} for consistency

Author: akohlmey

lammps-tutorials.tex

@@ -4353,7 +4353,7 @@ \subsection{Installation}
 \subsubsection{Installing the Linux .tar.gz Package}
 
 Download the archive (e.g.,~LAMMPS-Linux-x86\_64-GUI-29Aug2024\_update2.tar.gz)
-and unpack it.  This will create a folder named LAMMPS\_GUI containing the
+and unpack it.  This will create a folder named \lammpsgui{} containing the
 included commands, which can be launched directly using ``./lammps-gui'' or
 ``./lmp'', for example.  Adding this folder to the PATH environment
 variable will make these commands accessible from everywhere, without the
@@ -4388,12 +4388,12 @@ \subsubsection{Installing the macOS Application Bundle}
 
 After downloading the macOS app bundle image file
 (e.g.,~LAMMPS-macOS-multiarch-GUI-29Aug2024\_update2.dmg), double-click
-on it.  In the dialog that opens drag the LAMMPS\_GUI app bundle into
+on it.  In the dialog that opens drag the \lammpsgui{} app bundle into
 the Applications folder.  To enable command-line access, follow the
 instructions in the README.txt file.  These macOS app-bundles contain
 native executables for both, Intel and Apple CPUs.
 
-After installation, you can launch LAMMPS\_GUI from the Applications
+After installation, you can launch \lammpsgui{} from the Applications
 folder.  Additionally, you can drag an input file onto the app or open
 files with the ``.lmp'' extension.  Note that the \lammpsgui{} app bundle is
 currently not cryptographically signed, so macOS may initially prevent