fixup??? reset: reinstate support for the deprecated --stdin option

This is now needed to appease `make check-docs` on the `seen` branch.

Signed-off-by: Johannes Schindelin <[email protected]>

Author: dscho

Documentation/git-reset.adoc

@@ -137,13 +137,13 @@ include::diff-context-options.adoc[]
 +
 For more details, see the 'pathspec' entry in linkgit:gitglossary[7].
 
---stdin::
+`--stdin`::
 	DEPRECATED (use `--pathspec-from-file=-` instead): Instead of taking
 	list of paths from the command line, read list of paths from the
 	standard input. Paths are separated by LF (i.e. one path per line) by
 	default.
 
--z::
+`-z`::
 	DEPRECATED (use `--pathspec-file-nul` instead): Only meaningful with
 	`--stdin`; paths are separated with NUL character instead of LF.