add -C option to diff and log synopsis in got man page
diff --git a/got/got.1 b/got/got.1
index 6d7473d..c206a51 100644
--- a/got/got.1
+++ b/got/got.1
@@ -91,7 +91,7 @@ will be checked out.
.El
.\".It Cm status
.\"Show current status of files.
-.It Cm log [ Fl c Ar commit ] [ Fl f ] [ Fl l Ar N ] [ Fl p ] [ Fl r Ar repository-path ] [ path ]
+.It Cm log [ Fl c Ar commit ] [ Fl C Ar number ] [ Fl f ] [ Fl l Ar N ] [ Fl p ] [ Fl r Ar repository-path ] [ path ]
Display history of a repository.
If a
.Ar path
@@ -124,7 +124,7 @@ Use the repository at the specified path.
If not specified, assume the repository is located at or above the current
working directory.
.El
-.It Cm diff [ Ar repository-path ] Ar object1 Ar object2
+.It Cm diff [ Fl C Ar number ] [ Ar repository-path ] Ar object1 Ar object2
Display the differences between two objects in the repository.
Each
.Ar object