Merge pull request javascript-tutorial#2906 from vabushkevich/form-multipart-fix

fix: replace `form/multipart` with `multipart/form-data`

Author: iliakan

5-network/01-fetch/article.md

@@ -195,7 +195,7 @@ To make a `POST` request, or a request with another method, we need to use `fetc
 - **`method`** -- HTTP-method, e.g. `POST`,
 - **`body`** -- the request body, one of:
   - a string (e.g. JSON-encoded),
-  - `FormData` object, to submit the data as `form/multipart`,
+  - `FormData` object, to submit the data as `multipart/form-data`,
   - `Blob`/`BufferSource` to send binary data,
   - [URLSearchParams](info:url), to submit the data in `x-www-form-urlencoded` encoding, rarely used.
 
@@ -304,7 +304,7 @@ Response properties:
 Methods to get response body:
 - **`response.text()`** -- return the response as text,
 - **`response.json()`** -- parse the response as JSON object,
-- **`response.formData()`** -- return the response as `FormData` object (form/multipart encoding, see the next chapter),
+- **`response.formData()`** -- return the response as `FormData` object (`multipart/form-data` encoding, see the next chapter),
 - **`response.blob()`** -- return the response as [Blob](info:blob) (binary data with type),
 - **`response.arrayBuffer()`** -- return the response as [ArrayBuffer](info:arraybuffer-binary-arrays) (low-level binary data),