Update filter-function-list to filter-value-list (#37633)

* Update `filter-function-list` to `filter-value-list`

* update

Author: skyclouds2001

files/en-us/web/css/backdrop-filter/index.md

@@ -47,7 +47,7 @@ backdrop-filter: unset;
 
 - `none`
   - : No filter is applied to the backdrop.
-- `<filter-function-list>`
+- `<filter-value-list>`
   - : A space-separated list of {{cssxref("&lt;filter-function&gt;")}}s or an [SVG filter](/en-US/docs/Web/SVG/Element/filter) that will be applied to the backdrop. CSS `<filter-function>`s include {{CSSxRef("filter-function/blur", "blur()")}}, {{CSSxRef("filter-function/brightness", "brightness()")}}, {{CSSxRef("filter-function/contrast", "contrast()")}}, {{CSSxRef("filter-function/drop-shadow", "drop-shadow()")}}, {{CSSxRef("filter-function/grayscale", "grayscale()")}}, {{CSSxRef("filter-function/hue-rotate", "hue-rotate()")}}, {{CSSxRef("filter-function/invert", "invert()")}}, {{CSSxRef("filter-function/opacity", "opacity()")}}, {{CSSxRef("filter-function/saturate", "saturate()")}}, and {{CSSxRef("filter-function/sepia", "sepia()")}}.
 
 ## Formal definition

files/en-us/web/svg/attribute/filter/index.md

@@ -49,7 +49,7 @@ svg {
           title="Single bar: exactly one of the entities must be present"
           >|</a
         >
-        <code>&#x3C;filter-function-list></code>
+        <code>&#x3C;filter-value-list></code>
       </td>
     </tr>
     <tr>