fixed small bug with muffin tin

meta_info/nomad_meta_info/exciting.nomadmetainfo.json

@@ -664,6 +664,8 @@
       "description": "muffin-tin points",
       "dtypeStr": "i",
       "name": "x_exciting_muffin_tin_points",
+      "repeats": true,
+      "shape": [],
       "superNames": [
         "section_system"
       ]
@@ -671,6 +673,8 @@
       "description": "muffin-tin radius",
       "dtypeStr": "f",
       "name": "x_exciting_muffin_tin_radius",
+      "repeats": true,
+      "shape": [],
       "superNames": [
         "section_system"
       ],