docs: improve blob

Author: atinux

docs/content/docs/2.storage/3.blob.md

@@ -33,7 +33,7 @@ Returns an array of [`BlobObject`](#blobobject).
 
 Returns a blob's data.
 
-```ts[/api/blob/[...pathname\\].get.ts]
+```ts [server/api/files/[...pathname\\].get.ts]
 export default eventHandler(async (event) => {
   const { pathname } = getRouterParams(event)
 
@@ -62,16 +62,8 @@ If you are fetching an image with a server route similar to the one above, you m
 
 Returns a blob's metadata.
 
-```ts[/api/blob/[...pathname\\].head.ts]
-export default eventHandler(async (event) => {
-  const { pathname } = getRouterParams(event)
-
-  const blob = await useBlob().head(pathname)
-
-  setHeader(event, 'x-blob', JSON.stringify(blob))
-
-  return sendNoContent(event)
-})
+```ts
+const blob = await useBlob().head(pathname)
 ```
 
 #### Params
@@ -86,7 +78,7 @@ Returns a [`BlobObject`](#blobobject).
 
 Uploads a blob to the storage.
 
-```ts [server/api/upload.post.ts]
+```ts [server/api/files.post.ts]
 export default eventHandler(async (event) => {
   const { pathname } = getRouterParams(event)
   const form = await readFormData(event)
@@ -116,7 +108,7 @@ Returns a [`BlobObject`](#blobobject).
 
 Deletes a blob.
 
-```ts[/api/blob/[...pathname\\].delete.ts]
+```ts [server/api/files/[...pathname\\].delete.ts]
 export default eventHandler(async (event) => {
   const { pathname } = getRouterParams(event)
 
@@ -139,24 +131,9 @@ Returns nothing.
 
 `ensureBlob()` is a handy util to validate a `Blob` by checking its size and type:
 
-```ts [server/api/upload.post.ts]
-export default eventHandler(async (event) => {
-  const form = await readFormData(event)
-  const file = form.get('file') as Blob
-
-  if (!file || !file.size) {
-    throw createError({
-      statusCode: 400,
-      message: 'No file provided'
-    })
-  }
-
-  // Will throw an error if the file is not an image or is larger than 1MB
-  ensureBlob(file, { maxSize: '1MB', types: ['image' ]})
-
-  // Save the image
-  return useBlob().put(`images/${file.name}`, file)
-})
+```ts
+// Will throw an error if the file is not an image or is larger than 1MB
+ensureBlob(file, { maxSize: '1MB', types: ['image' ]})
 ```
 
 ### Params