diff --git a/docs/source/sls/algorithm.rst b/docs/source/sls/algorithm.rst
index 2798d53920e8037d49cb46be4678f677a86090c1..61cf22a8ae57c36c894d058dabdca2ca68465f9e 100644
--- a/docs/source/sls/algorithm.rst
+++ b/docs/source/sls/algorithm.rst
@@ -6,7 +6,6 @@ Instrument correction
 ---------------------
 
 CSST SLS pipeline是应用于12块无缝光谱模块探测器的仪器效应改正，包含3个波段，每4块探测器对应1个波段：
-
     - GU: ″ field of view from 255-400nm with a plate scale of ″/pixel.
     - GV: ″ field of view from 400-620nm with a plate scale of ″/pixel.
     - GI: ″ field of view from 620-1000nm with a plate scale of ″/pixel.