fix: linguitic and header type changes

plugins/upload/README.md

@@ -1,7 +1,7 @@
 ![plugin-upload](banner.png)
 
 Upload files from disk to a remote server over HTTP.
-Download files from a remote HTTP server to disk
+Download files from a remote HTTP server to disk.
 
 ## Install
 
@@ -55,10 +55,10 @@ Afterwards all the plugin's APIs are available through the JavaScript guest bind
 import { upload } from 'tauri-plugin-upload-api'
 
 upload(
-    'https://example.com/file-upload'
-    './path/to/my/file.txt'
-    (progress, total) => console.log(`Uploaded ${progress} of ${total} bytes`) // a callback that will be called with the upload progress
-    { 'ContentType': 'text/plain' } // optional headers to send with the request
+    'https://example.com/file-upload',
+    './path/to/my/file.txt',
+    (progress, total) => console.log(`Uploaded ${progress} of ${total} bytes`), // a callback that will be called with the upload progress
+    { 'Content-Type': 'text/plain' } // optional headers to send with the request
 )
 ```
 
@@ -66,10 +66,10 @@ upload(
 import { download } from "tauri-plugin-upload-api";
 
 download(
-    'https://example.com/file-download-link'
-    './path/to/save/my/file.txt'
-    (progress, total) => console.log(`Downloaded ${progress} of ${total} bytes`) // a callback that will be called with the download progress
-    { 'ContentType': 'text/plain' } // optional headers to send with the request
+    'https://example.com/file-download-link',
+    './path/to/save/my/file.txt',
+    (progress, total) => console.log(`Downloaded ${progress} of ${total} bytes`), // a callback that will be called with the download progress
+    { 'Content-Type': 'text/plain' } // optional headers to send with the request
 )
 ```