zh_CN: Change log of last commit

chapter01/changelog.xml

@@ -47,7 +47,7 @@
       <para>2019-03-27</para>
       <itemizedlist>
         <listitem>
-          <para>[bdubbs] - Revert to meson-0.49.2.</para>
+          <para>[bdubbs] - 降级到 meson-0.49.2。</para>
         </listitem>
       </itemizedlist>
     </listitem>