[committed] libstdc++: Fix Doxygen warning about ambiguous file name

[Jonathan Wakely]

libstdc++-v3/ChangeLog:

	* include/std/string_view: Adjust Doxygen @file comment.

Tested x86_64-linux. Committed to trunk.

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commit 2c1557ac7b7652c63418abac1a1c4b7a9860a9f9
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Thu Apr 8 14:47:47 2021

    libstdc++: Fix Doxygen warning about ambiguous file name
    
    libstdc++-v3/ChangeLog:
    
            * include/std/string_view: Adjust Doxygen @file comment.

diff --git a/libstdc++-v3/include/std/string_view b/libstdc++-v3/include/std/string_view
index 31502f7d58d..33e2129383a 100644
--- a/libstdc++-v3/include/std/string_view
+++ b/libstdc++-v3/include/std/string_view
@@ -22,7 +22,7 @@
 // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
 // <http://www.gnu.org/licenses/>.
 
-/** @file string_view
+/** @file include/string_view
  *  This is a Standard C++ Library header.
  */