From bed2cf49faaeb2860da8f1f6e4054cb5818cac85 Mon Sep 17 00:00:00 2001
From: Justin Lin <justin.sdk@gmail.com>
Date: Sat, 26 Jun 2021 18:36:10 +0800
Subject: [PATCH] update doc

---
 docs/lib3x-sf_thicken.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/docs/lib3x-sf_thicken.md b/docs/lib3x-sf_thicken.md
index e20b7b56..c17e3873 100644
--- a/docs/lib3x-sf_thicken.md
+++ b/docs/lib3x-sf_thicken.md
@@ -25,7 +25,7 @@ It thickens a surface, described by a m * n list of `[x, y, z]`s.
 
 ![sf_thicken](images/lib3x-sf_thicken-1.JPG)
 
-use <surface/sf_thicken.scad>;
+	use <surface/sf_thicken.scad>;
 
 	function f(x, y) = 
 		30 * (