I removed the empty `p` elements for accessibility as mentioned in this https://codeberg.org/forgejo/forgejo/pulls/12786#issuecomment-16247117. I also adjusted the spacing for the "reference" text with the divider to have the copy button have the same spacing as other buttons.
## Testing
Navigate to an issue and observe the spacing of the time tracker, reference and dependencies sections.
<table style="width:100%">
<tr>
<td>Before</td>
<td>After</td>
</tr>
<tr>
<td><img width="250" src="/attachments/a4e14050-1d14-457c-9d4f-ec9ac1ae3bcc" /></td>
<td><img width="250" src="/attachments/3ab4445c-9f14-49d7-ac77-a7d69e914e58" /></td>
</tr>
</table>
Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/12864
Reviewed-by: 0ko <0ko@noreply.codeberg.org>
