Fix typo (#6238)

src/misc/detect-url-mime.ts

@@ -1,5 +1,5 @@
 import { createTemp } from './create-temp';
-import { downloadUrl } from './donwload-url';
+import { downloadUrl } from './download-url';
 import { detectType } from './get-file-info';
 
 export async function detectUrlMime(url: string) {

src/misc/download-text-file.ts

@@ -2,7 +2,7 @@ import * as fs from 'fs';
 import * as util from 'util';
 import Logger from '../services/logger';
 import { createTemp } from './create-temp';
-import { downloadUrl } from './donwload-url';
+import { downloadUrl } from './download-url';
 
 const logger = new Logger('download-text-file');