[clang-tidy][doc] Fix incorrect link syntax in cppcoreguidelines-pro-… (#170088)

…bounds-avoid-unchecked-container-access

Missing a trailing underscore to render it as a link.

Co-authored-by: Carlos Gálvez <[email protected]>

Author: carlosgalvezp

clang-tools-extra/docs/clang-tidy/checks/cppcoreguidelines/pro-bounds-avoid-unchecked-container-access.rst

@@ -29,9 +29,9 @@ STL containers for which ``operator[]`` is well-defined for all inputs are
 excluded from this check (e.g.: ``std::map::operator[]``).
 
 This check enforces part of the `SL.con.3
-<https://isocpp.github.io/CppCoreGuidelines/CppCoreGuidelines#slcon3-avoid-bounds-errors>`
+<https://isocpp.github.io/CppCoreGuidelines/CppCoreGuidelines#slcon3-avoid-bounds-errors>`_
 guideline and is part of the `Bounds Safety (Bounds 4)
-<https://isocpp.github.io/CppCoreGuidelines/CppCoreGuidelines#pro-bounds-arrayindex>`
+<https://isocpp.github.io/CppCoreGuidelines/CppCoreGuidelines#pro-bounds-arrayindex>`_
 profile from the C++ Core Guidelines.
 
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