docs: Update links to go to zulip-flutter instead of zulip-mobile.

Updates the mobile beta testing link to go to the help center
instructions for installing a beta release of the mobile app.

Part of #35643.

docs/contributing/reporting-bugs.md

@@ -55,7 +55,7 @@ Steps and best practices for filing a GitHub issue:
    - [zulip/zulip](https://github.com/zulip/zulip/issues) for issues with the
      Zulip web app or server. A good default if you aren't sure which repository
      to use.
-   - [zulip/zulip-mobile](https://github.com/zulip/zulip-mobile/issues) for
+   - [zulip/zulip-flutter](https://github.com/zulip/zulip-flutter/issues) for
      issues with the mobile apps.
    - [zulip/zulip-desktop](https://github.com/zulip/zulip-desktop/issues) for
      issues that are specific to the Zulip desktop app, and therefore _do not_

docs/contributing/suggesting-features.md

@@ -69,7 +69,7 @@ for a feature or improvement. Steps and best practices for filing an issue:
    - [zulip/zulip](https://github.com/zulip/zulip/issues) for suggestions for the
      Zulip web app or server. A good default if you aren't sure which repository
      to use.
-   - [zulip/zulip-mobile](https://github.com/zulip/zulip-mobile/issues) for
+   - [zulip/zulip-flutter](https://github.com/zulip/zulip-flutter/issues) for
      suggestions for the mobile apps.
    - [zulip/zulip-desktop](https://github.com/zulip/zulip-desktop/issues) for
      suggestions that are specific to the Zulip desktop app.

docs/development/using.md

@@ -89,12 +89,12 @@ the development environment][authentication-dev-server].
 
 ## Mobile
 
-See the mobile project's documentation on [using a development server
+See the mobile project's documentation on [getting set up to develop
-for mobile development][mobile-dev-server].
+and contribute to the mobile app][mobile-development-guide].
 
 [rest-api]: https://zulip.com/api/rest
 [authentication-dev-server]: authentication.md
 [django-runserver]: https://docs.djangoproject.com/en/5.0/ref/django-admin/#runserver
 [new-feature-tutorial]: ../tutorials/new-feature-tutorial.md
 [testing-docs]: ../testing/testing.md
-[mobile-dev-server]: https://github.com/zulip/zulip-mobile/blob/main/docs/howto/dev-server.md#using-a-dev-version-of-the-server
+[mobile-development-guide]: https://github.com/zulip/zulip-flutter/blob/main/docs/setup.md

docs/overview/architecture-overview.md

@@ -9,11 +9,10 @@ incoming webhook [integrations](https://zulip.com/integrations/)
 with other services and applications (see [the directory structure
 guide](directory-structure.md)).
 
-[Zulip Mobile](https://github.com/zulip/zulip-mobile) is the official
+[Zulip Flutter](https://github.com/zulip/zulip-flutter) is the official
-mobile Zulip client supporting both iOS and Android, written in
+mobile Zulip client supporting both iOS and Android, built with Flutter,
-JavaScript with React Native, and [Zulip
+and [Zulip Desktop](https://github.com/zulip/zulip-desktop) is the
-Desktop](https://github.com/zulip/zulip-desktop) is the official Zulip
+official Zulip desktop client for macOS, Linux, and Windows.
-desktop client for macOS, Linux, and Windows.
 [Zulip Terminal](https://github.com/zulip/zulip-terminal) is our
 official terminal-based client.
 

docs/overview/release-lifecycle.md

@@ -218,7 +218,7 @@ independently as needed.
 [chat-zulip-org]: https://zulip.com/development-community/
 [fork-zulip]: ../production/modify.md
 [zulip-server]: https://github.com/zulip/zulip
-[mobile-beta]: https://github.com/zulip/zulip-mobile#using-the-beta
+[mobile-beta]: https://zulip.com/help/mobile-app-install-guide#install-a-beta-release
 [label-blocker]: https://github.com/zulip/zulip/issues?q=is%3Aissue+is%3Aopen+label%3A%22priority%3A+blocker%22
 [label-high]: https://github.com/zulip/zulip/issues?q=is%3Aissue+is%3Aopen+label%3A%22priority%3A+high%22
 [label-help-wanted]: https://github.com/zulip/zulip/issues?q=is%3Aopen+is%3Aissue+label%3A%22help+wanted%22