fix: revert to previous documentation folder structure (#18127)

docs/tutorial/support.md

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+# Electron Support
+
+## Finding Support
+
+If you have a security concern,
+please see the [security document](../../SECURITY.md).
+
+If you're looking for programming help,
+for answers to questions,
+or to join in discussion with other developers who use Electron,
+you can interact with the community in these locations:
+- [`electron`](https://discuss.atom.io/c/electron) category on the Atom
+forums
+- `#atom-shell` channel on Freenode
+- [`Electron`](https://atom-slack.herokuapp.com) channel on Atom's Slack
+- [`electron-ru`](https://telegram.me/electron_ru) *(Russian)*
+- [`electron-br`](https://electron-br.slack.com) *(Brazilian Portuguese)*
+- [`electron-kr`](https://electron-kr.github.io/electron-kr) *(Korean)*
+- [`electron-jp`](https://electron-jp.slack.com) *(Japanese)*
+- [`electron-tr`](https://electron-tr.herokuapp.com) *(Turkish)*
+- [`electron-id`](https://electron-id.slack.com) *(Indonesia)*
+- [`electron-pl`](https://electronpl.github.io) *(Poland)*
+
+If you'd like to contribute to Electron,
+see the [contributing document](../../CONTRIBUTING.md).
+
+If you've found a bug in a [supported version](#supported-versions) of Electron,
+please report it with the [issue tracker](../development/issues.md).
+
+[awesome-electron](https://github.com/sindresorhus/awesome-electron)
+is a community-maintained list of useful example apps,
+tools and resources.
+
+## Supported Versions
+
+The latest three release branches are supported by the Electron team.
+For example, if the latest release is 2.0.x, then the 2-0-x series
+is supported, as are the two previous release series 1-7-x and 1-8-x.
+
+When a release branch reaches the end of its support cycle, the series
+will be deprecated in NPM and a final end-of-support release will be
+made. This release will add a warning to inform that an unsupported
+version of Electron is in use.
+
+These steps are to help app developers learn when a branch they're
+using becomes unsupported, but without being excessively intrusive
+to end users.
+
+If an application has exceptional circumstances and needs to stay
+on an unsupported series of Electron, developers can silence the
+end-of-support warning by omitting the final release from the app's
+`package.json` `devDependencies`. For example, since the 1-6-x series
+ended with an end-of-support 1.6.18 release, developers could choose
+to stay in the 1-6-x series without warnings with `devDependency` of
+`"electron": 1.6.0 - 1.6.17`.
+
+## Supported Platforms
+
+Following platforms are supported by Electron:
+
+### macOS
+
+Only 64bit binaries are provided for macOS, and the minimum macOS version
+supported is macOS 10.10 (Yosemite).
+
+### Windows
+
+Windows 7 and later are supported, older operating systems are not supported
+(and do not work).
+
+Both `ia32` (`x86`) and `x64` (`amd64`) binaries are provided for Windows.
+Running Electron apps on Windows for ARM devices is possible by using the
+ia32 binary.
+
+### Linux
+
+The prebuilt `ia32` (`i686`) and `x64` (`amd64`) binaries of Electron are built on
+Ubuntu 12.04, the `armv7l` binary is built against ARM v7 with hard-float ABI and
+NEON for Debian Wheezy.
+
+[Until the release of Electron 2.0][arm-breaking-change], Electron will also
+continue to release the `armv7l` binary with a simple `arm` suffix. Both binaries
+are identical.
+
+Whether the prebuilt binary can run on a distribution depends on whether the
+distribution includes the libraries that Electron is linked to on the building
+platform, so only Ubuntu 12.04 is guaranteed to work, but following platforms
+are also verified to be able to run the prebuilt binaries of Electron:
+
+* Ubuntu 12.04 and newer
+* Fedora 21
+* Debian 8
+
+[arm-breaking-change]: https://github.com/electron/electron/blob/master/docs/api/breaking-changes.md#duplicate-arm-assets