Add external links to release note/drafter

[stockiNail]

Adds to release note/drafter the following links:

• documentation
• migration guide (v2)
• samples

to keep it aligned to Chart.js format.

[stockiNail]

@LeeLenaleee I was stupid because I had seen in chartjs that sequence but I have decided to change it... don't ask why.

[LeeLenaleee]

np, np :)
Maby we should also add typedoc to the documentation. Then we have all the links chart.js also has in its release drafter. But that is something for another PR and low prio

[stockiNail]

np, np :) Maby we should also add typedoc to the documentation. Then we have all the links chart.js also has in its release drafter. But that is something for another PR and low prio

@LeeLenaleee Yes, I agree 100%.

Off topic: I was thinking that maybe we should release version 2. in this #755 (comment) I have shared my standpoint about missing things.

With this PR, remains:

1. #749 raises a doubt about the clip on box for label. If the proposal will be accepted, we have a breaking change and therefore another PR to add it in the migration guide is required
2. currently events options, commons for all annotation, are managed at root level of plugin options. Now with common node, maybe it makes sense to move over there, like all other annotation options. This would be a breaking change.

Item 2 can be ignored and we will see in version 3.

What do you think?