Help: Convert signatures of file command

Convert `file` command to use new `signature` directive. Use '<HASH>'
rather than 'HASH' for relevant signature targets, as this is arguably
more correct, results in less need to specify explicit targets, but
still produces '#hash' as the HTML anchor.

Although actual textual changes to `file` are fairly minimal, large
portions of the content have been re-indented and in many cases,
re-flowed. Some tabular content in literal text blocks has also been
converted to actual tables.

0 files changed, 0 insertions, 0 deletions