Switch katacoda links to killercoda

README.md

@@ -23,7 +23,7 @@ If you like **Sming**, give it a star, or fork it and [contribute](#contribute)!
 Sming supports multiple architectures and has a [plethora of features](https://sming.readthedocs.io/en/latest/index.html#summary).
 Choose the architecture of your choice to [install the needed development software](https://sming.readthedocs.io/en/latest/getting-started).
 
-You can also try Sming without installing anything locally. We have an [interactive tutorial](https://www.katacoda.com/slaff/scenarios/sming-host-emulator) that can be run directly from your browser.
+You can also try Sming without installing anything locally. We have an [interactive tutorial](https://killercoda.com/slaff/scenario/sming-host-emulator) that can be run directly from your browser.
 
 ## Documentation
 

docs/source/arch/host/index.rst

@@ -8,7 +8,7 @@ the sample applications to be compiled on a Linux/Windows host system
 and be tested before uploading them to the microcontroller.
 
 If you want to try it we have an
-`interactive tutorial <https://www.katacoda.com/slaff/scenarios/sming-host-emulator>`__
+`interactive tutorial <https://killercoda.com/slaff/scenario/sming-host-emulator>`__
 that can be run directly from your browser.
 
 See :doc:`/getting-started/index` for installation details.

docs/source/getting-started/index.rst

@@ -18,7 +18,7 @@ Choose your preferred development environment for how to install the needed deve
    docker/index
 
 You can also try Sming without installing anything locally.
-We have an  `interactive tutorial <https://www.katacoda.com/slaff/scenarios/sming-host-emulator>`__ that can be run directly from your browser.
+We have an  `interactive tutorial <https://killercoda.com/slaff/scenario/sming-host-emulator>`__ that can be run directly from your browser.
 
 
 .. toctree::

docs/source/index.rst

@@ -20,7 +20,7 @@ Summary
 -  Fast and user friendly development
 -  Integrated :doc:`host emulator <arch/host/index>` to assist with developing, testing and debugging
    libraries and applications on a PC before uploading them to an actual microcontroller.
-   Try it out online `here <https://www.katacoda.com/slaff/scenarios/sming-host-emulator>`__.
+   Try it out online `here <https://killercoda.com/slaff/scenario/sming-host-emulator>`__.
 -  Built-in powerful wireless modules
 -  Compatible with standard :doc:`libraries` - use popular hardware in few lines of code
 -  Simple yet powerful hardware API wrappers