Update windows-package-manager-v1-roadmap.md

[denelon]

Fixed April 2021

Microsoft Reviewers: Open in CodeFlow

[github-actions]

New misspellings found, please review:

• strikethroug

To accept these changes, run the following commands

perl -e '
my @expect_files=qw('".github/actions/spelling/expect.txt"');
@ARGV=@expect_files;
my @stale=qw('"AComment addressof ALIGNAS allescaped alse ARMEL backend bbwe bitfield blep BORLAND cassert cctype cdunn cerr clocale CMake cmath cname codepoint cplusplus CPPLIB cstddef cstdio cstdlib cstr cstring CStyle ctor czstring deque deref dllimport dnp elif emark endcode endverbatim EOL eturn eyc fpclassify gcc GNUC hpux HREF hrow ieeefp inl iosfwd isfinite Isfinitef isnan isprint IString javascript jsonvalue keey keylength lconv len Lepilleur localeconv lossfree malloc maxsize memcmp memset MINGW modf msvc Multiline mutators nfinity noreturn NULLREF nvcc NVIDIAs OString ote ptrdiff py Skype skypeapp Solaris sourceforge sout SOVERSION ssin stackoverflow STARTUPINFOW stdarg strchr strcmp strdup strlen strncmp unindent Unserialize usf valueiterator vscprintf vsnprintf walkaround wiki wikipedia Workaround wstringstream xf xl "');
my $re=join "|", @stale;
my $suffix=".".time();
my $previous="";
sub maybe_unlink { unlink($_[0]) if $_[0]; }
while (<>) {
  if ($ARGV ne $old_argv) { maybe_unlink($previous); $previous="$ARGV$suffix"; rename($ARGV, $previous); open(ARGV_OUT, ">$ARGV"); select(ARGV_OUT); $old_argv = $ARGV; }
  next if /^($re)(?:$| .*)/; print;
}; maybe_unlink($previous);'
perl -e '
my $new_expect_file=".github/actions/spelling/expect.txt";
open FILE, q{<}, $new_expect_file; chomp(my @words = <FILE>); close FILE;
my @add=qw('"strikethroug "');
my %items; @items{@words} = @words x (1); @items{@add} = @add x (1);
@words = sort {lc($a) cmp lc($b)} keys %items;
open FILE, q{>}, $new_expect_file; for my $word (@words) { print FILE "$word\n" if $word =~ /\w/; };
close FILE;'
git add .github/actions/spelling || echo '... you want to ensure .github/actions/spelling/expect.txt is added to your repository...'