fixed graph label

assets/js/graph.js

@@ -238,7 +238,12 @@ async function drawGraph(baseUrl, isHome, pathColors, graphConfig) {
     .attr("dx", 0)
     .attr("dy", (d) => nodeRadius(d) + 8 + "px")
     .attr("text-anchor", "middle")
-    .text((d) => content[d.id]?.title || (decodeURI(d.id.charAt(1).toUpperCase() + d.id.slice(2, 30) + (d.id.length > 30 ? "" : "..."))).replace("-", " "))
+    .text((d) => {
+      const str = content[d.id]?.title ||
+        decodeURI(d.id.charAt(1).toUpperCase() + d.id.slice(2))
+          .replace("-", " ");
+      str.slice(0, 30) + str.length > 30 ? "..." : ""
+    })
     .style('opacity', (opacityScale - 1) / 3.75)
     .style("pointer-events", "none")
     .style('font-size', fontSize + 'em')