[top] Remove NexysVideo pinout configuration and files

This partially addresses #12221

Signed-off-by: Michael Schaffner <msf@opentitan.org>
diff --git a/util/topgen/gen_top_docs.py b/util/topgen/gen_top_docs.py
index d311365..3749ea9 100644
--- a/util/topgen/gen_top_docs.py
+++ b/util/topgen/gen_top_docs.py
@@ -198,7 +198,7 @@
                              headers="firstrow",
                              tablefmt="pipe",
                              colalign=colalign)
-    summary_table = TABLE_HEADER + gencmd + "-->\n\n" + summary_table
+    summary_table = TABLE_HEADER + gencmd + "-->\n\n" + summary_table + "\n"
 
     target_table_path = doc_path / "targets.md"
     with open(target_table_path, 'w') as target_outfile: