Add info about tag names convention/limitation

[Lasica]

Description

Add info about this part of code

kedro/kedro/pipeline/node.py

Lines 126 to 129 in 0fc8089

	if name and not re.match(r"[\w\.-]+$", name):
	raise ValueError(
	f"'{name}' is not a valid node name. It must contain only "
	f"letters, digits, hyphens, underscores and/or fullstops."

Documentation page (if applicable)

https://docs.kedro.org/en/stable/api/kedro.pipeline.node.html - implies any string is fine
https://docs.kedro.org/en/stable/nodes_and_pipelines/nodes.html#how-to-tag-a-node - info box here

Context

Slack conversation:
https://linen-slack.kedro.org/t/16720002/are-there-any-special-characters-that-should-be-avoided-in-t#591ec378-8ea7-4fd2-9f80-c7fefea3d1aa

[noklam]

@Lasica Would you be interested to open a PR to fix it? We are happy to take PR for this.

[boringbyte]

@Lasica I would like to contribute. I can create fix it and open PR.

[astrojuanlu]

@boringbyte go ahead!