[PATCH 3/4] pacdiff: update --sudo usages

[Denton Liu]

In 19ab4fa (pacdiff: Add option to use sudo/sudoedit to manage files,
2021-03-27), the --sudo option was introduced. However, a corresponding
entry was not included in the man page. Document it.

Also, align the usage text in the program with its friends above.

Signed-off-by: Denton Liu <liu.denton at gmail.com>
---
 doc/pacdiff.8.txt | 3 +++
 src/pacdiff.sh.in | 2 +-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/doc/pacdiff.8.txt b/doc/pacdiff.8.txt
index 592da72..12f786b 100644
--- a/doc/pacdiff.8.txt
+++ b/doc/pacdiff.8.txt
@@ -53,6 +53,9 @@ Options
 *-c, \--cachedir <dir>*::
 	Scan 'dir' instead as the pacman cache for 3-way merge base candidates.
 
+*-s, \--sudo*::
+	Use sudo to merge/remove files.
+
 See Also
 --------
 linkman:pacman[8], linkman:pacman.conf[5]
diff --git a/src/pacdiff.sh.in b/src/pacdiff.sh.in
index 674892b..fe66a6e 100644
--- a/src/pacdiff.sh.in
+++ b/src/pacdiff.sh.in
@@ -60,7 +60,7 @@ General Options:
   --nocolor           remove colors from output
   -c/--cachedir <dir> scan "dir" for 3-way merge base candidates.
                       (default: read from @sysconfdir@/pacman.conf)
-  -s/--sudo         use sudo to merge/remove files
+  -s/--sudo           use sudo to merge/remove files
 
 Environment Variables:
   DIFFPROG          override the merge program: (default: 'vim -d')
-- 
2.31.0.208.g409f899ff0