follow filename-tag convention for old anchors

doc/sphinx/book/administration.rst

doc/sphinx/book/app/b_internals.rst

doc/sphinx/book/app/c_lua_tutorial.rst

doc/sphinx/book/app/d_plugins.rst

doc/sphinx/book/app/e_sophia/index.rst

doc/sphinx/book/box/atomic.rst

doc/sphinx/book/box/authentication.rst

doc/sphinx/book/box/box_index.rst

doc/sphinx/book/box/box_introspection.rst

doc/sphinx/book/box/box_schema.rst

doc/sphinx/book/box/box_session.rst

doc/sphinx/book/box/box_space.rst

doc/sphinx/book/box/index.rst

doc/sphinx/book/box/limitations.rst

doc/sphinx/book/box/sophia_diff.rst

doc/sphinx/book/box/triggers.rst

doc/sphinx/book/configuration/cfg_basic.rst

doc/sphinx/book/configuration/cfg_replication.rst

doc/sphinx/book/configuration/index.rst

doc/sphinx/book/connectors/__c.rst