improve wording of the help page for lxc-ls

doc/ja/lxc-ls.sgml.in

@@ -173,7 +173,7 @@ by KATOH Yasufumi <karma at jazz.email.ne.jp>
         <listitem>
           <para>
             <!--
-            Comma separate list of column to show in the fancy output.
+            Comma separated list of columns to show in the fancy output.
             The list of accepted and default fields is listed in \-\-help.
             -->
             装飾付き出力で表示するカラムのコンマ区切りのリスト。デフォルトで表示される項目と指定可能な項目名は --help オプションで確認してください。

doc/ko/lxc-ls.sgml.in

@@ -173,7 +173,7 @@ by Sungbae Yoo <sungbae.yoo at samsung.com>
         <listitem>
           <para>
             <!--
-            Comma separate list of column to show in the fancy output.
+            Comma separated list of columns to show in the fancy output.
             The list of accepted and default fields is listed in \-\-help.
             -->
             &#045;&#045;fancy로 출력할때 어떤 컬럼을 보여줄지 쉼표(,)로 구분된 리스트.

doc/lxc-ls.sgml.in

@@ -146,7 +146,7 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
         </term>
         <listitem>
           <para>
-            Comma separated list of column to show in the fancy output.
+            Comma separated list of columns to show in the fancy output.
             The list of accepted and default fields is listed in --help.
           </para>
         </listitem>