Document all available flags in all of the subcommand synopsis texts.
diff --git a/git-flow-hotfix b/git-flow-hotfix
index 2c0ec45..5866178 100644
--- a/git-flow-hotfix
+++ b/git-flow-hotfix
@@ -20,8 +20,8 @@
 
 usage() {
 	echo "usage: git flow hotfix [list] [-v]"
-	echo "       git flow hotfix start <version> [<base>]"
-	echo "       git flow hotfix finish <version>"
+	echo "       git flow hotfix start [-F] <version> [<base>]"
+	echo "       git flow hotfix finish [-Fsump] <version>"
 }
 
 cmd_default() {