Update Doc/using/configure.rst

Co-authored-by: Ezio Melotti <[email protected]>

Author: vstinner

Doc/using/configure.rst

@@ -324,11 +324,11 @@ Linker Options
 
 .. cmdoption:: LDFLAGS
 
-   Linker flags, e.g. ``-L<library directory>``.
+   Linker flags, e.g. :samp:`-L{library_directory}`.
 
 .. cmdoption:: LIBS
 
-   Libraries to pass to the linker, e.g. ``-l<library>``.
+   Libraries to pass to the linker, e.g. :samp:`-l{library}`.
 
 .. cmdoption:: MACHDEP