Update Documentation to Remove Katacoda Links

[YashPimple]

Is this a BUG REPORT or FEATURE REQUEST?

BUG REPORT

What happened:
I went through the litmus-docs documentation and would like to discuss an issue so when we go through the Getting started guide under the Run-your-first-workflow section the katacoda link present under various-ways-of-learning-litmus does works since is no longer accessible due to the closure of the Katacoda platform.

What you expected to happen:
Due to the closure of the Katacoda platform, the scenario and its associated content are no longer accessible. As a result, users like me are unable to follow the scenario as intended and benefit from the hands-on experience it offered.

How to reproduce it (as minimally and precisely as possible):
I recommend removing the link labeled "Learn by Running a Sample Katacoda Scenario" from the "Run Your First Workflow" section. Additionally, the text referencing the Katacoda scenario should also be removed to avoid confusion for users who may attempt to access it. By removing this link and associated text, we can ensure that users are not directed to inaccessible content and that our documentation remains accurate and reliable.

Anything else we need to know?:

[anshikavashistha]

@YashPimple Are you currently working on this issue?