Update Readkit URL (#5777)

* Update README.md

Fix Readkit URL

* Update README.fr.md

Fix Readkit URL

* Apply suggestions from code review

---------

Co-authored-by: Alexandre Alapetite <alexandre@alapetite.fr>

README.fr.md

@@ -233,7 +233,7 @@ et [l’API Fever](https://freshrss.github.io/FreshRSS/fr/users/06_Fever_API.htm
 | [NewsFlash](https://gitlab.com/news-flash/news_flash_gtk)                             | GNU/Linux   | [✔️](https://gitlab.com/news-flash/news_flash_gtk)            | ✔️✔️                   | GReader, Fever   | ➖            | ⭐⭐        | ➖                           | ✔️                | ✔️       | ✔️    | ➖      | ➖          |
 | [Newsboat 2.24+](https://newsboat.org/)                                 | GNU/Linux, macOS, FreeBSD | [✔️](https://github.com/newsboat/newsboat/)                   | ✔️✔️                   | GReader          | ➖            | ⭐        | ➖                             | ✔️                  | ✔️         | ➖     | ✔️       | ➖           |
 | [Vienna RSS](http://www.vienna-rss.com/)                                              | macOS       | [✔️](https://github.com/ViennaRSS/vienna-rss)                 | ✔️✔️                   | GReader          | ❔            | ❔        | ❔                             | ❔                  | ❔         | ❔     | ❔       | ❔           |
-| [Readkit](https://apps.apple.com/app/readkit/id588726889)                             | iOS, macOS  | ➖                                                            | ✔️✔️                   | GReader          | ✔️            | ⭐⭐⭐    | ➖                             | ✔️                  | ✔️         | ➖     | ✓       | 💲           |
+| [Readkit](https://apps.apple.com/app/readkit-read-later-rss/id1615798039)                             | iOS, macOS  | ➖                                                            | ✔️✔️                   | GReader          | ✔️            | ⭐⭐⭐    | ➖                             | ✔️                  | ✔️         | ➖     | ✓       | 💲           |
 | [Reeder](https://www.reederapp.com/)                                                  | iOS, macOS  | ➖                                                            | ✔️✔️                   | GReader, Fever   | ✔️            | ⭐⭐⭐       | ➖                             | ✔️                  | ✔️         | ➖     | ➖       | ✔️           |
 | [lire](https://lireapp.com/)                                                          | iOS, macOS  | ➖                                                            | ✔️✔️                   | GReader          | ❔            | ❔        | ❔                             | ❔                  | ❔         | ❔     | ❔       | ❔           |
 | [Unread](https://apps.apple.com/app/unread-2/id1363637349)                            | iOS         | ➖                                                            | ✔️✔️                   | Fever            | ✔️            | ❔        | ❔                             | ❔                  | ✔️         | ➖     | ➖       | ➖           |

README.md

@@ -130,7 +130,7 @@ and [Fever API](https://freshrss.github.io/FreshRSS/en/users/06_Fever_API.html)
 | [NewsFlash](https://gitlab.com/news-flash/news_flash_gtk)                             | GNU/Linux   | [✔️](https://gitlab.com/news-flash/news_flash_gtk)            | ✔️✔️                   | GReader, Fever | ➖            | ⭐⭐      | ➖                           | ✔️                | ✔️       | ✔️    | ➖      | ➖          |
 | [Newsboat 2.24+](https://newsboat.org/)                                 | GNU/Linux, macOS, FreeBSD | [✔️](https://github.com/newsboat/newsboat/)                   | ✔️✔️                   | GReader          | ➖            | ⭐        | ➖                             | ✔️                  | ✔️         | ➖     | ✔️       | ➖           |
 | [Vienna RSS](http://www.vienna-rss.com/)                                              | macOS       | [✔️](https://github.com/ViennaRSS/vienna-rss)                 | ✔️✔️                   | GReader          | ❔            | ❔        | ❔                             | ❔                  | ❔         | ❔     | ❔       | ❔           |
-| [Readkit](https://apps.apple.com/app/readkit/id588726889)                             | iOS, macOS  | ➖                                                            | ✔️✔️                   | GReader          | ✔️            | ⭐⭐⭐    | ➖                             | ✔️                  | ✔️         | ➖     | ✓       | 💲           |
+| [Readkit](https://apps.apple.com/app/readkit-read-later-rss/id1615798039)                             | iOS, macOS  | ➖                                                            | ✔️✔️                   | GReader          | ✔️            | ⭐⭐⭐    | ➖                             | ✔️                  | ✔️         | ➖     | ✓       | 💲           |
 | [Reeder](https://www.reederapp.com/)*                                                 | iOS, macOS  | ➖                                                            | ✔️✔️                   | GReader, Fever   | ✔️            | ⭐⭐⭐    | ➖                             | ✔️                  | ✔️         | ➖     | ➖       | ✔️           |
 | [lire](https://lireapp.com/)                                                          | iOS, macOS  | ➖                                                            | ✔️✔️                   | GReader          | ❔            | ❔        | ❔                             | ❔                  | ❔         | ❔     | ❔       | ❔           |
 | [Unread](https://apps.apple.com/app/unread-2/id1363637349)                            | iOS         | ➖                                                            | ✔️✔️                   | Fever            | ✔️            | ❔        | ❔                             | ❔                  | ✔️         | ➖     | ➖       | ➖           |