update

Author: knonomura

README.md

@@ -7,9 +7,8 @@ GridDB WebAPI is developed using GridDB Java Client and [Spring Boot](https://sp
 ## Operating environment
 
 Building of the library and execution of the sample programs have been checked in the following environment.
-
-    OS: CentOS 7.5(x64)
-    [GridDB Server](https://github.com/griddb/griddb_nosql): 4.2
+- OS: CentOS 7.5(x64)
+- [GridDB Server](https://github.com/griddb/griddb_nosql): 4.2
 
 ## QuickStart