math tracker: space before the skipped count

src/routes/trackers/math/+page.svelte

@@ -316,8 +316,8 @@
 		<div class="big">
 			<span class="pct">{pct(counts.done, countable)}%</span>
 			<span class="muted"
-				>{counts.done} of {countable} chapters done{#if counts.skipped}
-					· {counts.skipped} skipped{/if}</span
+				>{counts.done} of {countable} chapters done{#if counts.skipped}{' · '}{counts.skipped}
+					skipped{/if}</span
 			>
 		</div>
 		{@render bar(counts, total)}