Linkify references to :nth-child for other :nth-foo pseudos

Author: fantasai

selectors3/Overview.html

@@ -1667,7 +1667,8 @@ <h5><a name=nth-last-child-pseudo>:nth-last-child() pseudo-class</a></h5>
 <var>a</var><code>n</code>+<var>b</var>-1 siblings
 <strong>after</strong> it in the document tree, for any positive
 integer or zero value of <code>n</code>, and has a parent element. See
-<code>:nth-child()</code> pseudo-class for the syntax of its argument.
+<a href="#nth-child-pseudo"><code>:nth-child()</code></a> pseudo-class for
+the syntax of its argument.
 It also accepts the '<code>even</code>' and '<code>odd</code>' values
 as arguments.
 
@@ -1688,8 +1689,9 @@ <h5><a name=nth-of-type-pseudo>:nth-of-type() pseudo-class</a></h5>
 <var>a</var><code>n</code>+<var>b</var>-1 siblings with the same expanded
 element name <strong>before</strong> it in the document tree, for any
 zero or positive integer value of <code>n</code>, and has a
-parent element. It also accepts the '<code>even</code>' and '<code>odd</code>'
-values.
+parent element. See <a href="#nth-child-pseudo"><code>:nth-child()</code></a>
+pseudo-class for the syntax of its argument. It also accepts the
+'<code>even</code>' and '<code>odd</code>' values.
 
 
 <div class="example">
@@ -1707,9 +1709,9 @@ <h5><a name=nth-last-of-type-pseudo>:nth-last-of-type() pseudo-class</a></h5>
 <var>a</var><code>n</code>+<var>b</var>-1 siblings with the same expanded
 element name <strong>after</strong> it in the document tree, for any
 zero or positive integer value of <code>n</code>, and has a
-parent element. See <code>:nth-child()</code> pseudo-class for the
-syntax of its argument. It also accepts the '<code>even</code>' and
-'<code>odd</code>' values.
+parent element. See <a href="#nth-child-pseudo"><code>:nth-child()</code></a>
+pseudo-class for the syntax of its argument. It also accepts the
+'<code>even</code>' and '<code>odd</code>' values.
 
 
 <div class="example">