Update c_memory_model.tex

String literals are stored in read-only, not code (at least not in modern standards)

introc/c_memory_model.tex

@@ -146,7 +146,7 @@ \subsubsection{String literals are constant}
 strcpy(ptr, "Will not work");
 \end{lstlisting}
 
-String literals are character arrays stored in the code segment of the program, which is immutable.
+String literals are character arrays stored in the read-only data segment of the program, which is immutable.
 Two string literals may share the same space in memory.
 An example follows.