[css-values-5][css-variables-1] 各種更新

[css-values-5][css-variables-1] Fix links
w3c/csswg-drafts@3563c20

[css-values-5] Drop var() vocabulary definition
w3c/csswg-drafts@4ccfe67

[css-values-5] Reorder text in arbitrary substitution section
w3c/csswg-drafts@1939164

[css-values-5] Clean up Arbitrary Substitution Function prose
w3c/csswg-drafts@d8a1804

[css-values-5][css-variables-1] Move arbitrary substitution function definition to css-values-5.
w3c/csswg-drafts@e589c28

[css-values-5] Fix grammar errors in if() notation
w3c/csswg-drafts@590b70f

[css-values-5] Define if() notation
w3c/csswg-drafts@f70deb4

[css-values-5] editorial: Align subheadings
w3c/csswg-drafts@d904ce9

[css-values-5] allow a single syntax component. Closes #11088
w3c/csswg-drafts@d108b02

[css-values-5] editorial: Add cross-reference to var() notation.
w3c/csswg-drafts@00804b2

[css-values-5] Fix attr() security to be clearer about invalidation time, and reduce the tainting scope to individual values.
w3c/csswg-drafts@9fad470

[css-values-5] Replace attr()'s syntax argument with <syntax>, and fix up its parsing/substitution rules as a result.
w3c/csswg-drafts@95e6ec6

Author: triple-underscore

css-anchor-position-ja.html

@@ -493,10 +493,9 @@
 容器~query:~CSSCOND5#container-query
 容器~query長さ単位:~CSSCOND5#container-query-length
 
-任意-代入~関数:~CSSVAR#arbitrary-substitution-function
-任意-代入~関数たちに代入する:~CSSVAR#substitute-a-var
-算出d値の時点で無効:~CSSVAR#invalid-at-computed-value-time
-	~CSSENV#substitute-an-env → ~CSSVAR#substitute-a-var
+任意-代入~関数:~CSSVAL5#arbitrary-substitution-function
+任意-代入~関数たちへ代入する:~CSSVAL5#substitute-arbitrary-substitution-function
+算出d値の時点で無効:~CSSVAL5#invalid-at-computed-value-time
 
 環境~変数:~CSSENV#css-environment-variable
 
@@ -4344,7 +4343,7 @@ <h3 title="Giving Fallback Options: the position-try-fallbacks property">5.1. ~f
 <p>
 %~style群 を成す各~propに対し
 ⇒
-その値~内の`任意-代入~関数たちに代入する$
+その値~内の`任意-代入~関数たちへ代入する$
 【！／`代入する＠~CSSENV#substitute-an-env$】
 ◎
 Substitute variables, env() functions, and similar arbitrary substitution functions in styles.

css-conditional5-ja.html

@@ -2345,7 +2345,7 @@ <h3 title="Size Container Features">6.1. ~size容器~特能</h3>
 </p>
 
 <p class="note">注記：
-`~custom~prop$による`代入＠~CSSVAR#substitute-a-var$の結果が当の`~size特能$用には妥当でない値になる場合、
+`~custom~prop$による`代入＠~CSSVAL5#substitute-arbitrary-substitution-function$の結果が当の`~size特能$用には妥当でない値になる場合、
 他の妥当でない特能~値と同じに取扱われ，当の~size特能を評価した結果は `未知^i になる。
 ◎
 Note: If custom property substitution results in an invalid value for the size feature, it is handled the same as other invalid feature values, and the result of the size feature is unknown.

css-properties-values-api-ja.html

@@ -354,8 +354,8 @@
 識別子:~CSSVAL#css-css-identifier
 
 ~custom~prop:~CSSVAR#custom-property
-代入:~CSSVAR#substitute-a-var
-算出d値の時点で無効:~CSSVAR#invalid-at-computed-value-time
+代入:~CSSVAL5#substitute-arbitrary-substitution-function
+算出d値の時点で無効:~CSSVAL5#invalid-at-computed-value-time
 無効が保証される値:~CSSVAR#guaranteed-invalid-value
 
 ~token化:~CSSSYN#tokenization

css-typed-om-reify-ja.html

@@ -790,8 +790,8 @@
 成分~値:~CSSSYN#component-value
 
 ~CSS識別子:~CSSVAL#css-css-identifier
+代入され:~CSSVAL5#substitute-arbitrary-substitution-function
 
-代入され:~CSSVAR#substitute-a-var
 ~custom~prop:~CSSVAR#custom-property
 
 	●用語（他