yash: doc/lineedit: fix wording

git-svn-id: svn+ssh://svn.sourceforge.jp/svnroot/yash/yash/trunk@3236 048f04df-13f5-43d7-8114-9f9ceecaec24
yash: doc/lineedit: fix markup

git-svn-id: svn+ssh://svn.sourceforge.jp/svnroot/yash/yash/trunk@3237 048f04df-13f5-43d7-8114-9f9ceecaec24