Typo: sys.prefex -> sys.prefix

Closes SF# 812152

Baskport candidate for release23-main

Doc/dist/sysconfig.tex

@@ -24,11 +24,11 @@ manipulations for other parts of the \module{distutils} package.
 
 
 \begin{datadesc}{PREFIX}
-  The result of \code{os.path.normpath(sys.prefex)}.
+  The result of \code{os.path.normpath(sys.prefix)}.
 \end{datadesc}
 
 \begin{datadesc}{EXEC_PREFIX}
-  The result of \code{os.path.normpath(sys.exec_prefex)}.
+  The result of \code{os.path.normpath(sys.exec_prefix)}.
 \end{datadesc}
 
 \begin{funcdesc}{get_config_var}{name}