Renamed pla quality to normal

Contributes CURA-10885

resources/definitions/anycubic_kobra_plus.def.json

@@ -12,7 +12,7 @@
         "has_materials": true,
         "machine_extruder_trains": { "0": "anycubic_kobra_plus_extruder_0" },
         "preferred_material": "generic_pla",
-        "preferred_quality_type": "pla",
+        "preferred_quality_type": "normal",
         "quality_definition": "anycubic_kobra_plus"
     },
     "overrides":

resources/quality/anycubic_kobra_plus/anycubic_kobra_plus_pla.inst.cfg → resources/quality/anycubic_kobra_plus/anycubic_kobra_plus_normal.inst.cfg

@@ -5,7 +5,7 @@ version = 4
 
 [metadata]
 global_quality = True
-quality_type = pla
+quality_type = normal
 setting_version = 22
 type = quality
 weight = 0