Add correct PR link to changelog

[EoinShaughnessy]

This PR replaces a link to an issue with a link to the actual PR. Have also removed a close bracket we don't need.

[EoinShaughnessy]

In our changelog, the title for #1836 is

Rename exported JavaScript modules to include component name

When you actually go to #1836, though, the title is

JavaScript modules are attached to the same global variable when imported individually

Can we change the PR title to match the changelog title?

[vanitabarrett]

@EoinShaughnessy Ah, interesting, that's because I mistakenly linked to the issue rather than the pull request. If we update the link (and number) to #2426, then the titles will match. It'll need updating in the full Changelog entry on the change too - are you ok to do that?

Sorry that'll change the ordering again too!

[EoinShaughnessy]

@vanitabarrett No worries! Ta for explaining. Yeah, I can change it.

[vanitabarrett]

@EoinShaughnessy Are you ok to update line 103 to match?

[EoinShaughnessy]

@vanitabarrett Sorry, my bad - yeah, think it's updated now.

[vanitabarrett]

@EoinShaughnessy Looks good, thanks for spotting that Eoin! Would you be ok to squash the commits before I approve?

[EoinShaughnessy]

@vanitabarrett Will do! :)