clarify usage of 'got rebase' options in man page
diff --git a/got/got.1 b/got/got.1
index 45962f9..ac80377 100644
--- a/got/got.1
+++ b/got/got.1
@@ -540,7 +540,7 @@ conflicts must be resolved first.
.It Cm bo
Short alias for
.Cm backout .
-.It Cm rebase Ar branch
+.It Cm rebase [ Fl a ] [ Fl c] [ Ar branch ]
Rebase commits on the specified
.Ar branch
onto the tip of the current branch of the work tree.
@@ -616,8 +616,10 @@ are as follows:
.Bl -tag -width Ds
.It Fl a
Abort an interrupted rebase operation.
+If this option is used, no further command-line arguments are allowed.
.It Fl c
Continue an interrupted rebase operation.
+If this option is used, no further command-line arguments are allowed.
.El
.It Cm rb
Short alias for