[PATCH] libstdc++: Fix Doxygen markup error

[Jonathan Wakely]

	* include/bits/stl_pair.h (pair): Remove stray Doxygen closing marker.

I added this stray marker a few months ago by mistake.

Committed to trunk.

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commit ba39ad7d7e29e1459ad1d816dc84753ef7503f51
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Tue Dec 3 11:50:31 2019 +0000

    libstdc++: Fix Doxygen markup error
    
            * include/bits/stl_pair.h (pair): Remove stray Doxygen closing marker.

diff --git a/libstdc++-v3/include/bits/stl_pair.h b/libstdc++-v3/include/bits/stl_pair.h
index f7ad1696545..1e0e4fe892a 100644
--- a/libstdc++-v3/include/bits/stl_pair.h
+++ b/libstdc++-v3/include/bits/stl_pair.h
@@ -272,7 +272,6 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
       explicit constexpr pair(const _T1& __a, const _T2& __b)
       : first(__a), second(__b) { }
 #endif
-      //@}
 
 #if __cplusplus < 201103L
       /// There is also a templated constructor to convert from other pairs.