Format file format from Windows/dos to Unix (#1949)

### What problem does this PR solve?

Related source file is in Windows/DOS format, they are format to Unix
format.

### Type of change

- [x] Refactoring

Signed-off-by: Jin Hai <haijin.chn@gmail.com>

docker/init.sql

@@ -1,2 +1,2 @@
-CREATE DATABASE IF NOT EXISTS rag_flow;
+CREATE DATABASE IF NOT EXISTS rag_flow;
 USE rag_flow;