Honor traditional SGML NAMELEN limit.

We've conformed to this limit in the past, so might as well continue to.

Aaron Swenson

doc/src/sgml/logicaldecoding.sgml

@@ -572,7 +572,7 @@ typedef void (*LogicalDecodeChangeCB) (
      </note>
     </sect3>
 
-     <sect3 id="logicaldecoding-output-plugin-filter-by-origin">
+     <sect3 id="logicaldecoding-output-plugin-filter-origin">
      <title>Origin Filter Callback</title>
 
      <para>

doc/src/sgml/replication-origins.sgml

@@ -84,7 +84,7 @@
   generated by the session is tagged with the replication origin of the
   generating session.  This allows to treat them differently in the output
   plugin, e.g. ignoring all but locally originating rows.  Additionally
-  the <link linkend="logicaldecoding-output-plugin-filter-by-origin">
+  the <link linkend="logicaldecoding-output-plugin-filter-origin">
   <function>filter_by_origin_cb</function></link> callback can be used
   to filter the logical decoding change stream based on the
   source. While less flexible, filtering via that callback is