Fixed some typos and extended comments for the middlewares

ref #76

src/middlewares/RawBody.ts

@@ -1,8 +1,8 @@
 import { Request, Response } from 'express';
 
 /**
- * Custom express middleware that appends the raw body to the request obeject.
- * Mainly used for parsing csvs from boddies.
+ * Custom express middleware that appends the raw body to the request object.
+ * Mainly used for parsing csvs from bodies.
  */
 
 const RawBodyMiddleware = (req: Request, res: Response, next: () => void) => {