[gcc r13-3295] libstdc++: Use markdown in Doxygen comment

[Jonathan Wakely <redi@gcc.gnu.org>]

https://gcc.gnu.org/g:6e8ce5d651b88cf9e91780105ca36dea83871d38

commit r13-3295-g6e8ce5d651b88cf9e91780105ca36dea83871d38
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Wed Oct 12 12:07:14 2022 +0100

    libstdc++: Use markdown in Doxygen comment
    
    This makes the comment easier to read in the source, without altering
    the Doxygen output.
    
    libstdc++-v3/ChangeLog:
    
            * include/std/iostream: Use markdown in Doxygen comment.

Diff:
---
 libstdc++-v3/include/std/iostream | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/libstdc++-v3/include/std/iostream b/libstdc++-v3/include/std/iostream
index 02e9c3039d1..70318a45891 100644
--- a/libstdc++-v3/include/std/iostream
+++ b/libstdc++-v3/include/std/iostream
@@ -48,13 +48,13 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   /**
    *  @name Standard Stream Objects
    *
-   *  The &lt;iostream&gt; header declares the eight <em>standard stream
-   *  objects</em>.  For other declarations, see
+   *  The `<iostream>` header declares the eight *standard stream objects*.
+   *  For other declarations, see
    *  http://gcc.gnu.org/onlinedocs/libstdc++/manual/io.html
    *  and the @link iosfwd I/O forward declarations @endlink
    *
    *  They are required by default to cooperate with the global C
-   *  library's @c FILE streams, and to be available during program
+   *  library's `FILE` streams, and to be available during program
    *  startup and termination. For more information, see the section of the
    *  manual linked to above.
   */