[libc++][gardening] Replace instances of `\x{AD}`.

[zoecarver]

Summary

This is a NFC.

[cjdb]

🚢 it

libcxx/docs/DesignDocs/FileTimeType.rst

 The filesystem library provides interfaces for getting and setting the last
 write time of a file or directory. The interfaces use the ``file_time_type``
 type, which is a specialization of ``chrono::time_point`` for the
 "filesystem clock". According to [fs.filesystem.syn]
 
   trivial-clock is an implementation-defined type that satisfies the
   Cpp17TrivialClock requirements ([time.clock.req]) and that is capable of
   representing and measuring file time values. Implementations should ensure
-  that the resolution and range of file_­time_­type reflect the operating
+  that the resolution and range of file_time_type reflect the operating
   system dependent resolution and range of file time values.
 
 
 On POSIX systems, file times are represented using the ``timespec`` struct,
 which is defined as follows:
 
 .. code-block:: cpp
 

libcxx/docs/OneRangesProposalStatus.csv

 Section,Description,Dependencies,Assignee,Patch,Complete
 [concepts],"Normally this would be more fine-grained, but it’s already been implemented.",,Christopher Di Bella,,✅
 [tuple.helper],Update <tuple> includes.,,,,
 [function.objects],"Comparison functions: equal_to, less, etc.",[concepts],Zoe Carver,D100429,
 [memory.syn],Add specializations for uninitialized_* and destroy_*. ,"[concepts], [readable.traits]: iter_value_t",,,
 [readable.traits]: indirectly_readable_traits,indirectly_readable_traits only. ,[concepts],Christopher Di Bella,D99461,
 [iterator.traits],Mainly updates to iterator_traits.,"[readable.traits]: indirectly_readable_traits, [concepts]",Christopher Di Bella,"D99854, D99855",
 [readable.traits]: iter_value_t,Finish implementing readable.traits.,"[readable.traits]: indirectly_readable_traits, [concepts], [iterator.traits]",Christopher Di Bella,D99863,
 [specialized.algorithms],NOT FINISHED,NOT FINISHED,,,
 [strings],Adds begin/end and updates const_iterator.,[iterator.concepts],,,
 [views.span],Same as [strings],[iterator.concepts],,,
 [incrementable.traits],,[concepts],Christopher Di Bella,"D99141, D99863",1/2
 [iterator.cust.move],Implement iter_move.,,Christopher Di Bella,D99873,
 [iterator.cust.swap],Implement iter_swap.,"[concepts], [readable.traits]: iter_value_t",,,
-[iterator.concepts],"indirectly_­readable, indirectly_writable, weakly_incrementable, incrementable, input_or_output_iterator, sentinel_for, sized_sentinel_for, input_iterator, output_iterator, forward_iterator, bidirectional_iterator, random_access_iterator, and contiguous_iterator.","[concepts], [readable.traits]: iter_value_t, [iterator.traits]",Christopher Di Bella,"indirectly_readable: D100073
+[iterator.concepts],"indirectly_readable, indirectly_writable, weakly_incrementable, incrementable, input_or_output_iterator, sentinel_for, sized_sentinel_for, input_iterator, output_iterator, forward_iterator, bidirectional_iterator, random_access_iterator, and contiguous_iterator.","[concepts], [readable.traits]: iter_value_t, [iterator.traits]",Christopher Di Bella,"indirectly_readable: D100073
 indirectly_wriatable: D100078 weakly_incrementable, incrementable: D100080 input_or_output_iterator, sentinel_for: D100160
 input_iterator: D100271
 forward_iterator: D100275
 bidirectional_iterator: D100278",
 [indirectcallable.indirectinvocable],"indirectly_unary_invocable, indirectly_regular_unary_invocable, indirectly_unary_predicate, indirectly_binary_predicate, indirectly_equivalence_relation, and indirectly_strict_weak_order.","[concepts], [readable.traits]: iter_value_t, [iterator.traits]",,,
 [projected],,[iterator.concepts],,,
 [common.alg.req]: pt. 1,"indirectly_movable, indirectly_movable_storable, indirectly_copyable, and indirectly_copyable_storable.",[iterator.concepts],,,
 [common.alg.req]: pt. 2,indirectly_swappable,"[iterator.concepts], [iterator.cust.swap]",,,

 [range.take],take_view,[range.all],,,
 [range.join],join_view,[range.all],,,
 [range.empty],empty_view,[view.interface],,,
 [range.single],single_view,[view.interface],,,
 [range.split],split_view,[range.all],,,
 [range.counted],view::counted,[range.subrange],,,
 [range.common],common_view,[range.all],,,
 [range.reverse],reverse_view,[range.all],,,
 No newline at end of file

libcxx/test/std/utilities/time/time.cal/time.cal.ymwd/time.cal.ymwd.members/ok.pass.cpp

 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 // UNSUPPORTED: c++03, c++11, c++14, c++17
 
 // <chrono>
 // class year_month_weekday;
 
 // constexpr bool ok() const noexcept;
-//  Returns: If any of y_­.ok(), m_­.ok(), or wdi_­.ok() is false, returns false.
+//  Returns: If any of y_.ok(), m_.ok(), or wdi_.ok() is false, returns false.
 //           Otherwise, if *this represents a valid date, returns true.
 //           Otherwise, returns false.
 
 #include <chrono>
 #include <type_traits>
 #include <cassert>
 
 #include "test_macros.h"