[Editorial] by-the-bye -> by the by

src/epub/text/the-devoted-friend.xhtml

@@ -46,7 +46,7 @@
 			<p>“ ‘Well, really,’ cried Hans, ‘it is very good of you to ask, very good indeed. I am afraid I had rather a hard time of it, but now the spring has come, and I am quite happy, and all my flowers are doing well.’</p>
 			<p>“ ‘We often talked of you during the winter, Hans,’ said the Miller, ‘and wondered how you were getting on.’</p>
 			<p>“ ‘That was kind of you,’ said Hans; ‘I was half afraid you had forgotten me.’</p>
-			<p>“ ‘Hans, I am surprised at you,’ said the Miller; ‘friendship never forgets. That is the wonderful thing about it, but I am afraid you don’t understand the poetry of life. How lovely your primroses are looking, by-the-bye!”</p>
+			<p>“ ‘Hans, I am surprised at you,’ said the Miller; ‘friendship never forgets. That is the wonderful thing about it, but I am afraid you don’t understand the poetry of life. How lovely your primroses are looking, by the by!”</p>
 			<p>“ ‘They are certainly very lovely,’ said Hans, ‘and it is a most lucky thing for me that I have so many. I am going to bring them into the market and sell them to the Burgomaster’s daughter, and buy back my wheelbarrow with the money.’</p>
 			<p>“ ‘Buy back your wheelbarrow? You don’t mean to say you have sold it? What a very stupid thing to do!’</p>
 			<p>“ ‘Well, the fact is,’ said Hans, ‘that I was obliged to. You see the winter was a very bad time for me, and I really had no money at all to buy bread with. So I first sold the silver buttons off my Sunday coat, and then I sold my silver chain, and then I sold my big pipe, and at last I sold my wheelbarrow. But I am going to buy them all back again now.’</p>