Issue checkstyle#13005: LineLength check documentation incorrectly sh…

…ows how to work with tabWidth property

src/xdocs/config_sizes.xml

@@ -603,7 +603,7 @@ import java.util.Arrays; // ok
             The calculation of the length of a line takes into account the
             number of expanded spaces for a tab character (<code>'\t'</code>). The default number
             of spaces is <code>8</code>. To specify a different number of spaces, the user can set
-            <a href="config.html#TreeWalker"><code>TreeWalker</code></a> property
+            <a href="config.html#Checker"><code>Checker</code></a> property
             <code>tabWidth</code> which applies to all Checks, including <code>LineLength</code>;
             or can set property <code>tabWidth</code> for <code>LineLength</code> alone.
           </li>