LibWeb/CSS: Update syntax comments for a couple of properties

Corresponds to:
w3c/csswg-drafts@3a2ac8d
w3c/csswg-drafts@fdc08f7

No code changes.

Author: AtkinsSJ

Libraries/LibWeb/CSS/Parser/PropertyParsing.cpp

@@ -1050,7 +1050,7 @@ RefPtr<StyleValue const> Parser::parse_counter_set_value(TokenStream<ComponentVa
 // https://drafts.csswg.org/css-ui-4/#cursor
 RefPtr<StyleValue const> Parser::parse_cursor_value(TokenStream<ComponentValue>& tokens)
 {
-    // <cursor-image>#? <cursor-predefined>
+    // [<cursor-image>,]* <cursor-predefined>
     // <cursor-image> = <url> <number>{2}?
     // So, any number of custom cursor definitions, and then a mandatory cursor name keyword, all comma-separated.
 

Libraries/LibWeb/CSS/Parser/ValueParsing.cpp

@@ -2282,6 +2282,7 @@ RefPtr<StyleValue const> Parser::parse_color_mix_function(TokenStream<ComponentV
 
     // color-mix() = color-mix( <color-interpolation-method> , [ <color> && <percentage [0,100]>? ]#)
     // FIXME: Update color-mix to accept 1+ colors instead of exactly 2.
+    // FIXME: <color-interpolation-method> is optional in the current spec.
     auto transaction = tokens.begin_transaction();
     tokens.discard_whitespace();
 
@@ -2529,7 +2530,7 @@ RefPtr<StyleValue const> Parser::parse_corner_shape_value(TokenStream<ComponentV
     }
 
     if (token.is_function("superellipse"sv)) {
-        // superellipse() = superellipse(<number [-∞,∞]> | infinity | -infinity)
+        // superellipse() = superellipse(<number> | infinity | -infinity)
         auto const& function = token.function();
 
         auto context_guard = push_temporary_value_parsing_context(FunctionContext { function.name });