Resolve "Correct heimdall source link"

The Heimdall project does not provide package for the last version. So you need to build it manually from [our fork](https://gitlab.e.foundation/e/tools/heimdall). Bellow the documentation for each platform, extracted from README of Heimdall project.

## Download Heimdall sources

Download from [Heimdall source code repository](https://gitlab.e.foundation/e/tools/heimdall).

[Heimdall source code repository](https://github.com/Benjamin-Dobell/Heimdall).

## If you are building on Windows (Source: [Heimdall/Win32/README.txt](https://gitlab.com/BenjaminDobell/Heimdall/blob/master/Win32/README.txt#L518))

The Heimdall project does not provide up to date packages. This means that in some cases, it will just not work. Consequently, we provide [patched sources](https://gitlab.e.foundation/e/tools/heimdall) and corresponding binaries.

> If you prefer to build the Heimdall suite by yourself, you can follow our documentation available [here](build-heimdall)

## Download Heimdall binaries

Download binaries provided by us [here](https://images.ecloud.global/tools/heimdall/) for you platform.

You can build the Heimdall suite yourself by following our documentation available [here](build-heimdall)

Once you have built the suite follow the below steps.

## Install

### On Windows

At the moment, the Windows build is not available. Please build it by yourself following [our documentation](build-heimdall).

### On Ubuntu

Run the following commands to install heimdall for all users: