Updated terminologies,code snippets & minor fixes in content for tutorials

[Jonsy13]

Signed-off-by: Vedant vedant.srotria@harness.io

Can be reviewed here -

• https://jonsy13.github.io/tutorials/tutorial-getting-started/index.html#0
• https://jonsy13.github.io/tutorials/tutorial-create-custom-chaos-scenarios/index.html#0
• https://jonsy13.github.io/tutorials/tutorial-running-chaos-scenario-on-remote-cluster/index.html#0
• https://jonsy13.github.io/tutorials/tutorial-defining-steady-state-hypothesis/index.html#0
• https://jonsy13.github.io/tutorials/tutorial-integrating-gitops/index.html#0
• https://jonsy13.github.io/tutorials/tutorials-teaming-in-litmus/index.html#0