diff --git a/docs/design_docs/segcore/scripts_and_tools.md b/docs/design_docs/segcore/scripts_and_tools.md
index 840755dcae..15ea51dc1d 100644
--- a/docs/design_docs/segcore/scripts_and_tools.md
+++ b/docs/design_docs/segcore/scripts_and_tools.md
@@ -1,14 +1,16 @@
 # Scripts and Tools
+
 The following scripts and commands may be used during segcore development
 
-## code format 
+## code format
+
 - under milvus/internal/core directory
-    - run `./run_clang_format .` to format cpp code
-        - to call clang-format-10,  need to install `apt install clang-format-10` in advance
-        - call `build-support/add_${lang}_license.sh` to add license info for cmake and cpp file
+  - run `./run_clang_format .` to format cpp code
+    - to call clang-format-10, need to install `apt install clang-format-10` in advance
+    - call `build-support/add_${lang}_license.sh` to add license info for cmake and cpp file
 - under milvus/ directory
-    - use `make cppcheck` to check format, including
-        - if clang-format is executed
-        - if license info is added
-        - if `cpplint.py` standard meets , might need to be fixed by hand
-    - `make verifier` also include functions in `make cppcheck`
\ No newline at end of file
+  - use `make cppcheck` to check format, including
+    - if clang-format is executed
+    - if license info is added
+    - if `cpplint.py` standard meets , might need to be fixed by hand
+  - `make verifier` also include functions in `make cppcheck`