Docs: Fixed Grafana Fundamentals tutorial to match updated UI (#73168)
* Update index.md
The word `Configuration` was used to describe an action for getting started, when the actual UI has the word `Administration` and not Configuration. Updated the docs to reflect the actual environment created.
* Update index.md
Updated the tutorial to match the current UI options
* Made copy edits for styling and consistency with Cloud fundamentals tutorial
Made some copy edits to match our style guide and to make this tutorial a bit more consistent with the Cloud version. Also added the step for updating the legend back to the build dashboards section.
* Ran linter
* Edited text to match updated UI
Made edits to match UI behaviour as well as some further style edits.
* Made final copy edits
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Co-authored-by: Isabel <76437239+imatwawana@users.noreply.github.com>
Co-authored-by: Isabel Matwawana <isabel.matwawana@grafana.com>
(cherry picked from commit cc1ea31616)
Co-authored-by: C M <40527412+glitchwizard@users.noreply.github.com>