Remove custom boundary generator from 3rd example.

Author: octet-stream

readme.md

@@ -80,9 +80,7 @@ import {Blob} from "fetch-blob" // For this example I will use v3 of this packag
 import fetch from "node-fetch"
 
 async function toBlob(form) {
-  // Note that Blob will lowercase the boundary string before assign it to Blob#type property. So you may need to bring your own boundary string, which must contain only lowercase alphabetic characters.
-  const boundary = randomBytes(16).toString("hex")
-  const encoder = new Encoder(form, boundary)
+  const encoder = new Encoder(form)
   const chunks = []
 
   for await (const chunk of encoder) {