Don't use Markdown code quotes in LaTeX source (#3686)

Author: HansOlsson

chapters/functions.tex

@@ -2223,7 +2223,7 @@ \subsection{Annotations for External Functions}\label{annotations-for-external-l
   In case calls to several external functions are generated in the same translation unit, the \lstinline!Include! annotations of the different functions must not define the same function -- except when relying on the deprecated behavior.
 
   The included code should be valid C89 code.
-  If the \lstinline[language=grammar]!external-function-call! contains any `size`-expression, the tool is responsible for ensuring that a C-header defining \lstinline[language=C]!size_t! is included before the \lstinline!"insertedCode"!.
+  If the \lstinline[language=grammar]!external-function-call! contains any \lstinline!size!-expression, the tool is responsible for ensuring that a C-header defining \lstinline[language=C]!size_t! is included before the \lstinline!"insertedCode"!.
   The \lstinline!"insertedCode"!, conditionally preceded by a header for \lstinline[language=C]!size_t!, must be a valid translation unit.
 
   When an \lstinline!Include! annotation is present, it shall provide a prototype for the external function, and hence the tool shall not produce an automatically generated prototype in the generated code in this case.