h6 fixes

index.mjs

@@ -192,7 +192,7 @@ const syntax = {
         paired: true,
         recursive: true,
         startRegexp: /\n######[ \t]*([^\[\n]*)(\[#(\S*)[ \t]*(.*)\])?\n/,
-        endRegexp: /\n#\s/,
+        endRegexp: /\n#+/,
         content: {
             start: {
                 point: 'end',