fix: Update comparable signiture

[skip libsass]

spec/core_functions/math/comparable.hrx

@@ -58,11 +58,6 @@ a {
 
 <===>
 ================================================================================
-<===> named/options.yml
----
-:todo:
-- sass/libsass#2916
-
 <===> named/input.scss
 a {b: comparable($number1: 1, $number2: 2)}
 
@@ -85,7 +80,7 @@ Error: $number1: c is not a number.
   input.scss 1:7  root stylesheet
 
 <===> error/type/arg_1/error-libsass
-Error: argument `$number-1` of `comparable($number-1, $number-2)` must be a number
+Error: argument `$number1` of `comparable($number1, $number2)` must be a number
         on line 1:7 of input.scss, in function `comparable`
         from line 1:7 of input.scss
 >> a {b: comparable(c, 1)}
@@ -106,7 +101,7 @@ Error: $number2: c is not a number.
   input.scss 1:7  root stylesheet
 
 <===> error/type/arg_2/error-libsass
-Error: argument `$number-2` of `comparable($number-1, $number-2)` must be a number
+Error: argument `$number2` of `comparable($number1, $number2)` must be a number
         on line 1:7 of input.scss, in function `comparable`
         from line 1:7 of input.scss
 >> a {b: comparable(1, c)}
@@ -127,7 +122,7 @@ Error: Missing argument $number2.
   input.scss 1:7  root stylesheet
 
 <===> error/too_few_args/error-libsass
-Error: Function comparable is missing argument $number-2.
+Error: Function comparable is missing argument $number2.
         on line 1 of input.scss
 >> a {b: comparable(1)}