Fix various hyperlinks to cross referenced pages and external resources.

[DCEW]

closes #136

[StatsRhian]

Good spot! However I we don't need to do ../user-guide/quickstart when we're already in user-guide. We should use quickstart for files within the same location

[StatsRhian]

Suggested change

	:lucide-rocket: If you want to know how to use the tool, see our [quick start guide](../user-guide/quick-start).
	:lucide-boxes: For a simple overview of how the tool works, please visit the [methodology](user-guide/methodology) page.
	:lucide-boxes: For a simple overview of how the tool works, please visit the [methodology](../user-guide/methodology) page.
	:lucide-sigma: If you would like the detail on how the tool works, have a look at the
	[technical information](technical-information).
	[technical information](../technical-information).
	:lucide-message-circle-question-mark: Got questions? Check if someone has already asked them! Visit our [frequently asked questions](/docs/user-guide/faq) page.
	:lucide-message-circle-question-mark: Got questions? Check if someone has already asked them! Visit our [frequently asked questions](../user-guide/faq) page.
	:lucide-rocket: If you want to know how to use the tool, see our [quick start guide](quick-start).
	:lucide-boxes: For a simple overview of how the tool works, please visit the [methodology](methodology) page.
	:lucide-sigma: If you would like the detail on how the tool works, have a look at the
	[technical information](../technical-information).
	:lucide-message-circle-question-mark: Got questions? Check if someone has already asked them! Visit our [frequently asked questions](faq) page.

[DCEW]

Resolving this as GH not letting me accept it - will make changes if still needed

[StatsRhian]

Don't understand why the suggestions won't go through! Weird! I'm just going to approve!