pipe documentation incorrectly renders part of memoize

[ntrel]

See https://issues.dlang.org/show_bug.cgi?id=20976

https://dlang.org/library/std/functional/pipe.html

[WebFreak001]

this issue gets introduced by ddox filter, sample invocation:

/usr/bin/dmd -o- -w -Xfdocs.json -Df__dummy.html -version=Have_phobos etc/c/curl.d etc/c/odbc/sql.d etc/c/odbc/sqlext.d etc/c/odbc/sqltypes.d etc/c/odbc/sqlucode.d etc/c/sqlite3.d etc/c/zlib.d std/algorithm/comparison.d std/algorithm/internal.d std/algorithm/iteration.d std/algorithm/mutation.d std/algorithm/package.d std/algorithm/searching.d std/algorithm/setops.d std/algorithm/sorting.d std/array.d std/ascii.d std/base64.d std/bigint.d std/bitmanip.d std/checkedint.d std/compiler.d std/complex.d std/concurrency.d std/container/array.d std/container/binaryheap.d std/container/dlist.d std/container/package.d std/container/rbtree.d std/container/slist.d std/container/util.d std/conv.d std/csv.d std/datetime/date.d std/datetime/interval.d std/datetime/package.d std/datetime/stopwatch.d std/datetime/systime.d std/datetime/timezone.d std/demangle.d std/digest/crc.d std/digest/hmac.d std/digest/md.d std/digest/murmurhash.d std/digest/package.d std/digest/ripemd.d std/digest/sha.d std/encoding.d std/exception.d std/experimental/allocator/building_blocks/affix_allocator.d std/experimental/allocator/building_blocks/aligned_block_list.d std/experimental/allocator/building_blocks/allocator_list.d std/experimental/allocator/building_blocks/ascending_page_allocator.d std/experimental/allocator/building_blocks/bitmapped_block.d std/experimental/allocator/building_blocks/bucketizer.d std/experimental/allocator/building_blocks/fallback_allocator.d std/experimental/allocator/building_blocks/free_list.d std/experimental/allocator/building_blocks/free_tree.d std/experimental/allocator/building_blocks/kernighan_ritchie.d std/experimental/allocator/building_blocks/null_allocator.d std/experimental/allocator/building_blocks/package.d std/experimental/allocator/building_blocks/quantizer.d std/experimental/allocator/building_blocks/region.d std/experimental/allocator/building_blocks/scoped_allocator.d std/experimental/allocator/building_blocks/segregator.d std/experimental/allocator/building_blocks/stats_collector.d std/experimental/allocator/common.d std/experimental/allocator/gc_allocator.d std/experimental/allocator/mallocator.d std/experimental/allocator/mmap_allocator.d std/experimental/allocator/package.d std/experimental/allocator/showcase.d std/experimental/allocator/typed.d std/experimental/checkedint.d std/experimental/logger/core.d std/experimental/logger/filelogger.d std/experimental/logger/multilogger.d std/experimental/logger/nulllogger.d std/experimental/logger/package.d std/file.d std/format/internal/floats.d std/format/internal/read.d std/format/internal/write.d std/format/package.d std/format/read.d std/format/spec.d std/format/write.d std/functional.d std/getopt.d std/int128.d std/internal/attributes.d std/internal/cstring.d std/internal/digest/sha_SSSE3.d std/internal/math/biguintcore.d std/internal/math/biguintnoasm.d std/internal/math/biguintx86.d std/internal/math/errorfunction.d std/internal/math/gammafunction.d std/internal/memory.d std/internal/scopebuffer.d std/internal/test/dummyrange.d std/internal/test/range.d std/internal/test/uda.d std/internal/unicode_comp.d std/internal/unicode_decomp.d std/internal/unicode_grapheme.d std/internal/unicode_norm.d std/internal/unicode_tables.d std/internal/windows/advapi32.d std/json.d std/logger/core.d std/logger/filelogger.d std/logger/multilogger.d std/logger/nulllogger.d std/logger/package.d std/math/algebraic.d std/math/constants.d std/math/exponential.d std/math/hardware.d std/math/operations.d std/math/package.d std/math/remainder.d std/math/rounding.d std/math/traits.d std/math/trigonometry.d std/mathspecial.d std/meta.d std/mmfile.d std/net/curl.d std/net/isemail.d std/numeric.d std/outbuffer.d std/package.d std/parallelism.d std/path.d std/process.d std/random.d std/range/interfaces.d std/range/package.d std/range/primitives.d std/regex/internal/backtracking.d std/regex/internal/generator.d std/regex/internal/ir.d std/regex/internal/kickstart.d std/regex/internal/parser.d std/regex/internal/tests.d std/regex/internal/tests2.d std/regex/internal/thompson.d std/regex/package.d std/signals.d std/socket.d std/stdint.d std/stdio.d std/string.d std/sumtype.d std/system.d std/traits.d std/typecons.d std/typetuple.d std/uni/package.d std/uri.d std/utf.d std/uuid.d std/variant.d std/windows/charset.d std/windows/registry.d std/windows/syserror.d std/zip.d std/zlib.d -vcolumns
../../.dub/packages/ddox/0.16.22/ddox/ddox filter --min-protection=Protected --only-documented docs.json

the filter call corrupts the docs.json