Cherry pick r11419

This fixes some typos in English, not useful for Chinese.  But we remove
a useless comment here.

chapter06/e2fsprogs.xml

@@ -42,11 +42,6 @@
 
   <sect2 role="installation">
     <title>安装 E2fsprogs</title>
-<!--
-    <para>First, fix a script that adjusts testing output:</para>
-
-<screen><userinput remap="pre">sed -i -e 's:\[\.-\]::' tests/filter.sed</userinput></screen>
--->
     <para>E2fsprogs 文档推荐在源代码目录树中的一个子目录中构建该软件包：
     </para>