feat(css): Update syntax for cursor (#1009)

feat(css): Update syntax for `cursor` property

Author: charlessuh

css/properties.json

@@ -4557,7 +4557,7 @@
     "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/counter-set"
   },
   "cursor": {
-    "syntax": "[ [ <url> [ <x> <y> ]? , ]* [ auto | default | none | context-menu | help | pointer | progress | wait | cell | crosshair | text | vertical-text | alias | copy | move | no-drop | not-allowed | e-resize | n-resize | ne-resize | nw-resize | s-resize | se-resize | sw-resize | w-resize | ew-resize | ns-resize | nesw-resize | nwse-resize | col-resize | row-resize | all-scroll | zoom-in | zoom-out | grab | grabbing ] ]",
+    "syntax": "[ [ <url> [ <x> <y> ]? , ]* <cursor-predefined> ]",
     "media": [
       "visual",
       "interactive"

css/syntaxes.json

@@ -278,6 +278,9 @@
   "cubic-bezier-easing-function": {
     "syntax": "ease | ease-in | ease-out | ease-in-out | <cubic-bezier()>"
   },
+  "cursor-predefined": {
+    "syntax": "auto | default | none | context-menu | help | pointer | progress | wait | cell | crosshair | text | vertical-text | alias | copy | move | no-drop | not-allowed | e-resize | n-resize | ne-resize | nw-resize | s-resize | se-resize | sw-resize | w-resize | ew-resize | ns-resize | nesw-resize | nwse-resize | col-resize | row-resize | all-scroll | zoom-in | zoom-out | grab | grabbing"
+  },
   "custom-color-space": {
     "syntax": "<dashed-ident>"
   },