fix: missing margin-bottom on heading in "Working on Your Issue" section

[Sohamsig]

Description

On the Layer5 Community page, the "Working on Your Issue" section heading has no margin-bottom, causing the first list item to sit immediately below the heading with no spacing, making it cramped and hard to read.

Screenshots

Expected Behavior

There should be proper spacing between the "Working on Your Issue" heading and the list items below it, consistent with other sections on the page.

Environment:

Host OS: Windows / macOS / Linux
Browser: Chrome / Firefox / Safari

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