diff --git a/docs/4.ES-API上手.md b/docs/04.ES-API上手.md
similarity index 92%
rename from docs/4.ES-API上手.md
rename to docs/04.ES-API上手.md
index 51b7561..efa0694 100644
--- a/docs/4.ES-API上手.md
+++ b/docs/04.ES-API上手.md
@@ -1,4 +1,3 @@
-
 # ES上手