feat(css): Sync syntax for some css functions (#938)

Author: skyclouds2001

css/functions.json

@@ -554,15 +554,15 @@
     "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/gradient/repeating-radial-gradient"
   },
   "rgb()": {
-    "syntax": "rgb( <percentage>#{3} , <alpha-value>? ) | rgb( <number>#{3} , <alpha-value>? ) | rgb( [ <number> | <percentage> | none ]{3} [ / [ <alpha-value> | none ] ]?  )",
+    "syntax": "rgb( <percentage>#{3} , <alpha-value>? ) | rgb( <number>#{3} , <alpha-value>? ) | rgb( [ <number> | <percentage> | none ]{3} [ / [ <alpha-value> | none ] ]? )",
     "groups": [
       "CSS Color"
     ],
     "status": "standard",
     "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/color_value/rgb"
   },
   "rgba()": {
-    "syntax": "rgba( <percentage>#{3} , <alpha-value>? ) | rgba( <number>#{3} , <alpha-value>? ) | rgba( [ <number> | <percentage> | none ]{3} [ / [ <alpha-value> | none ] ]?  )",
+    "syntax": "rgba( <percentage>#{3} , <alpha-value>? ) | rgba( <number>#{3} , <alpha-value>? ) | rgba( [ <number> | <percentage> | none ]{3} [ / [ <alpha-value> | none ] ]? )",
     "groups": [
       "CSS Color"
     ],

css/syntaxes.json

@@ -150,7 +150,7 @@
     "syntax": "<color-base> | currentColor | <system-color> | <light-dark()> | <deprecated-system-color>"
   },
   "color()": {
-    "syntax": "color( [from <color>]? <colorspace-params> [ / [ <alpha-value> | none ] ]? )"
+    "syntax": "color( [ from <color> ]? <colorspace-params> [ / [ <alpha-value> | none ] ]? )"
   },
   "color-base": {
     "syntax": "<hex-color> | <color-function> | <named-color> | <color-mix()> | transparent"