fix bracket

tournaments/templates/tournaments/tournament_bracket.html

@@ -363,7 +363,7 @@ function renderBracket() {
     left: calc(100% + 20px);
     bottom: calc(50% - 2px); /* Account for half of horizontal line height */
     width: 2px;
-    height: calc((var(--next-match-distance)) / 2); /* Add half of horizontal line height */
+    height: calc(((var(--next-match-distance)) / 2)); /* Add half of horizontal line height */
     background: #666;
 }