doc: make comment more generic to secure it against architectural changes

src/main/services/session.ts

@@ -2,7 +2,7 @@ import { session } from 'electron';
 import OnHeadersReceivedDetails = Electron.OnHeadersReceivedDetails;
 
 export function setHeaders(): void {
-  // these headers only work on web requests, file:// protocol is handled via meta tags in index.html
+  // these headers only work on web requests, file:// protocol is handled via meta tags in the html
   session.defaultSession.webRequest.onHeadersReceived(
     (details: OnHeadersReceivedDetails, callback: (response: {}) => void) => {
       callback({