patchDocumentation: typofix --column description

> f4ed0af6 (Merge branch 'nd/columns', 2012-05-03) brought in three
> cut-and-pasted copies of malformatted descriptions.  Let's fix them
> all the same way by marking the configuration variable names up as
> monospace just like the command line option `--column` is typeset.
>
> While we are at it, correct a missing space after the full stop that
> ends the sentence.
>
> Signed-off-by: Junio C Hamano <gitster@pobox.com>
> ---
>  Documentation/git-branch.txt | 2 +-
>  Documentation/git-status.txt | 2 +-
>  Documentation/git-tag.txt    | 2 +-
>  3 files changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/Documentation/git-branch.txt b/Documentation/git-branch.txt
> index adaa1782a8..5b4b2135a1 100644
> --- a/Documentation/git-branch.txt
> +++ b/Documentation/git-branch.txt
> @@ -153,7 +153,7 @@ OPTIONS
>  --column[=<options>]::
>  --no-column::
>  	Display branch listing in columns. See configuration variable
> -	column.branch for option syntax.`--column` and `--no-column`
> +	`column.branch` for option syntax. `--column` and `--no-column`
>  	without options are equivalent to 'always' and 'never' respectively.
>  +
>  This option is only applicable in non-verbose mode.
> diff --git a/Documentation/git-status.txt b/Documentation/git-status.txt
> index c0764e850a..83f38e3198 100644
> --- a/Documentation/git-status.txt
> +++ b/Documentation/git-status.txt
> @@ -130,7 +130,7 @@ ignored, then the directory is not shown, but all contents are shown.
>  --column[=<options>]::
>  --no-column::
>  	Display untracked files in columns. See configuration variable
> -	column.status for option syntax.`--column` and `--no-column`
> +	`column.status` for option syntax. `--column` and `--no-column`
>  	without options are equivalent to 'always' and 'never'
>  	respectively.
>  
> diff --git a/Documentation/git-tag.txt b/Documentation/git-tag.txt
> index 56656d1be6..31a97a1b6c 100644
> --- a/Documentation/git-tag.txt
> +++ b/Documentation/git-tag.txt
> @@ -134,7 +134,7 @@ options for details.
>  --column[=<options>]::
>  --no-column::
>  	Display tag listing in columns. See configuration variable
> -	column.tag for option syntax.`--column` and `--no-column`
> +	`column.tag` for option syntax. `--column` and `--no-column`
>  	without options are equivalent to 'always' and 'never' respectively.
>  +
>  This option is only applicable when listing tags without annotation lines.