[css-writing-modes] Move orthogonal-shrink-to-fit to section 7.3 as it applies to wider cases than 7.3.2

Author: kojiishi

css-writing-modes/Overview.bs

@@ -1983,6 +1983,22 @@ Orthogonal Flows</h3>
       even though they are in the <i>block-axis</i> of the child.
   </div>
 
+  <div class="note" id="orthogonal-shrink-to-fit">
+    Note that this section requires that
+    when an auto-sized child box establishes an orthogonal flow,
+    the used size of the child
+    is calculated to fit its content;
+    and this resulting content-based size
+    is used as input to the <i>inline-axis</i> <var>min-content</var> and <var>max-content</var> of the parent.
+  <p>
+    This means that when applying shrink-to-fit formula to a box
+    such as an inline-block, float, or table-cell,
+    if its child establishes an orthogonal flow,
+    the calculation dependency must be changed so that
+    the sizing phase of the child runs first and
+    its used <i>block size</i> becomes an input to the <i>inline-size</i> shrink-to-fit formula of the parent.
+  </div>
+
 <h4 id="orthogonal-auto">
 Available Sizes in Orthogonal Flows</h4>
 
@@ -2105,23 +2121,6 @@ Auto-sizing Block Containers in Orthogonal Flows</h4>
 
   <p class="issue"><a href="https://lists.w3.org/Archives/Public/www-style/2015Apr/0212.html">Defer proposal in ML</a> not resolved yet</p>
 
-  <div class="note" id="orthogonal-shrink-to-fit">
-  <p>
-    Note that this section requires that
-    when an auto-sized child box establishes an orthogonal flow,
-    the used size of the child
-    is calculated to fit its content;
-    and this resulting content-based size
-    is used as input to the <i>inline-axis</i> <var>min-content</var> and <var>max-content</var> of the parent.
-  <p>
-    This means that when applying shrink-to-fit formula to a box
-    such as an inline-block, float, or table-cell,
-    if its child establishes an orthogonal flow,
-    the calculation dependency must be changed so that
-    the sizing phase of the child runs first and
-    its used <i>block size</i> becomes an input to the <i>inline-size</i> shrink-to-fit formula of the parent.
-  </div>
-
 <h4 id="orthogonal-layout">
 Auto-sizing Other Orthogonal Flow Roots</h4>