fix: missing line break after properties in tooltip

Author: cbouy

src/widget.css

@@ -132,6 +132,10 @@ h4 {
     content: "";
     display: block;
 }
+.mols2grid-anywidget .m2g-popover span::after {
+    content: "";
+    display: table;
+}
 .mols2grid-anywidget .m2g-popover .arrow {
     width: 10px;
     height: 10px;