Update SoftwareGuide/Latex/Appendices/CodingStyleGuide.tex

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: hjmjohnson

SoftwareGuide/Latex/Appendices/CodingStyleGuide.tex

@@ -3294,8 +3294,8 @@ \section{Backslashes}%
 \normalsize
 
 The use of a backslash as line continuation character is discouraged in standard c++ code blocks.
-Backslashes are allowed when defining a lengthy preprocessor macro definitions to allow for
-improved readability when it spans multiple lines.
+Backslashes are allowed when defining lengthy preprocessor macros to allow for
+improved readability when they span multiple lines.
 
 \section{Using Standard Macros}%
 \label{sec:UsingStandardMacros}