Typos and minor text changes

This was r11388.

chapter06/systemd.xml

@@ -57,7 +57,7 @@
 
 <screen><userinput remap="pre">sed -i '527,565 d'                  src/basic/missing.h
 sed -i '24 d'                       src/core/load-fragment.c
-sed -i '53 a#include &lt;sys/mount.h&gt;' src/shared/bus-unit-util.cd</userinput></screen>
+sed -i '53 a#include &lt;sys/mount.h&gt;' src/shared/bus-unit-util.c</userinput></screen>
 
     <para>从默认的 udev 规则中删除不必要的组
     <systemitem class="groupname">render</systemitem>：</para>

prologue/foreword.xml

@@ -10,11 +10,6 @@
 
   <title>前言</title>
 
-<!--para>My journey to learn and better understand Linux began over a decade ago,
-back in 1998. I had just installed my first Linux distribution and had
-quickly become intrigued with the whole concept and philosophy behind
-Linux.</para-->
-
 <para>从 1998 年起，我开始了长达十余年的学习和深入理解 Linux 的旅程。
 	当时我刚刚安装了我的第一个 Linux 发行版，
 	并迅速被 Linux 背后的整个设计理念和哲学所折服。

prologue/standards.xml

@@ -30,7 +30,7 @@
       </listitem>
       <listitem>
         <para><ulink url="http://refspecs.linuxfoundation.org/lsb.shtml">Linux
-        Standard Base (LSB) Version 5.0</ulink></para>
+        Standard Base (LSB) Version 5.0 (2015)</ulink></para>
 
         <!--para>The LSB has four separate standards: Core, Desktop,
         Runtime Languages, and Imaging. In addition to generic requirements
@@ -129,7 +129,7 @@
         <listitem>
           <para>Alsa, ATK, Cairo, Desktop-file-utils, Freetype, Fontconfig,
           Gdk-pixbuf, Glib2, GTK+2, Icon-naming-utils, Libjpeg-turbo, Libpng, Libtiff,
-          Libxml2, MesaLib, Pango, Qt4, Xdg-utils, Xorg</para>
+          Libxml2, MesaLib, Pango, Xdg-utils, Xorg</para>
         </listitem>
       </varlistentry>
 
@@ -172,7 +172,7 @@
       <varlistentry>
         <term><emphasis>LSB Desktop:</emphasis></term>
         <listitem>
-          <para>无</para>
+          <para>Qt4（但提供了 Qt5）</para>
         </listitem>
       </varlistentry>
 

prologue/why.xml

@@ -659,7 +659,7 @@
       <listitem revision="systemd">
         <para>Systemd</para>
 
-        <!--para>This package provides and <application>init</application> program
+        <!--para>This package provides an <application>init</application> program
         and several additional boot and system control capabilities as an
         alternative to Sysvinit.  It is used by many commercial distributions.
         </para-->