🐛 Fix trailing separator in string_links for single-value fields

The separator condition used len(data) which refers to the original
string length instead of len(data_list) which is the split list. This
caused a trailing "; " to always appear after single-value fields
when needs_string_links is configured.

Author: floroks

sphinx_needs/layout.py

@@ -546,7 +546,7 @@ def meta(
                     data_node += ref_item
 
                 if (
-                    name in needs_string_links_option and index + 1 < len(data)
+                    name in needs_string_links_option and index + 1 < len(data_list)
                 ) or index + 1 < len([data]):
                     data_node += nodes.emphasis("; ", "; ")