Correct COBOL formatting

README.md

@@ -2,10 +2,10 @@
 
 A CopyBook will be parsed into usable JSON, like this:
 ```cpy
-01 STUDENT.
-  05 ST_ID         PIC 9(5).
-  05 FIRST_NAME    PIC X(20).
-  05 LAST_NAME     PIC X(20).
+       01 STUDENT.
+           05 ST_ID         PIC 9(5).
+           05 FIRST_NAME    PIC X(20).
+           05 LAST_NAME     PIC X(20).
 ```
 ```json
 {