fixing button styles

Why is this change being made?

The button styles look bugged. This was because the curly brace extensions were applied below the hyperlink, which meant they were being applied to the paragraph containing the button, as opposed to being applied to the button itself by appending to the end of the URL.

Author Checklist

• Provided a concise title for the MR
• Added a description to this MR explaining the reasons for the proposed change, per say-why-not-just-what
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