Refine ENSNode Docs Site UX

[lightwalker-eth]

1. This is missing its hover state and clicky-hand mouse cursor.

2. This is also missing its hover state and clicky-hand mouse cursor.

3. Please remove the bold styling. The only bold items in the nav bar are root-level items, not level 2+ items.

4. The lightning bolt emoji should be moved to the end (not the beginning) of these links. When it's at the beginning it looks like yet another layer of indentation.

These links should be prefixed by some kind of an arrow pointing back to the left <-

[coderabbitai]

🔗 Related PRs

#2121 - docs refinements [merged]

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