Fix extra p tag in colour-picker

[Leilei332]

The following code didn't display correctly in tiddlywiki, the color circle is displayed lower:

\procedure color-picker-actions()
<$action-setfield $tiddler=<<currentTiddler>> color=<<colour-picker-value>>/>
\end

<$transclude $variable="colour-picker" actions=<<color-picker-actions>>/>

I found that the p tag may be created when the actions parameter isn't empty. After I removed two newline the problem was solved.

[stackblitz]

Run & review this pull request in StackBlitz Codeflow.

[github-actions]

Confirmed: Leilei332 has already signed the Contributor License Agreement (see contributing.md)

[Jermolene]

Thanks @Leilei332