docs: docs/pwa improvements (#1762)

Co-authored-by: Joaquín Sánchez <userquin@gmail.com>

docs/content/80.pwa.md

@@ -30,6 +30,12 @@ To install a Progressive Web App (PWA) on Safari, follow these steps:
 - Customize the name of the app (if desired) and tap "Add".
 - The PWA should now appear on your home screen.
 
+### Other borwsers on iOS
+
+Browsers on iOS other than Safari (like Chrome) are very limited on PWA functionalities. Besides Web Push Notifications (like in Safari) not even PWA installation is supported.
+
+If you are using one of these browsers and want to add Elk to your homescreen, you will have to use Safari and follow the instructions above.
+
 ### Firefox
 
 To install a Progressive Web App (PWA) on Firefox, follow these steps:
@@ -119,8 +125,9 @@ To debug the PWA service worker in your mobile browser, you will need to:
   - Confirm the prompt on your device to allow USB debugging.
   - Open Chrome/Edge browser in your device.
 4) Open Chrome on your computer and go to `chrome://inspect/#devices`.
-  - Elk application should be listed in the "Remote Target" section after a few seconds (navigate to any page).
-  - Enter `http://localhost:5314` in the open in a new tab input and click Open button.
+  - Your device should be listed in the "Remote Target" section after a few seconds (if not, open Chrome/Edge and navigate to any page).
+  - Click the "Port forwarding..." button and type "5314" into the "Port" input and "localhost:5314" into the "IP address and port" input, then press "Done".
+  - Enter `http://localhost:5314` in the "Open tab with url" input and click the "Open" button.
   - Click on the "Inspect" button to open the DevTools.
 5) Remember to remove the service worker from your device browser using dev tools once you finish testing the service worker:
   - Go to `Application > Storage`, you should check following checkboxes:
@@ -129,3 +136,4 @@ To debug the PWA service worker in your mobile browser, you will need to:
     - Cache: `[x]` Cache storage and `[x]` Application cache
   - Click on Clear site data button
   - Go to `Application > Service Workers` and check the current service worker is missing or has the status deleted or reduntant.
+6) Disable port forwarding: open the "Port forwarding..." modal again on the `chrome://inspect/#devices` page and either uncheck the "Enable port forwarding" option or remove the entry from the list and click "Done".