fix compilation error: string was broken two lines

Author: XianJianbang

chapter03/mmap_example.c

@@ -91,8 +91,7 @@ main(int argc, char *argv[])
 	close(fd);
 
 	/* store a string to the Persistent Memory */
-	strcpy(pmaddr, "This is new data written to the 
-			file");
+	strcpy(pmaddr, "This is new data written to the file");
 
 	/*
 	 * Simplest way to flush is to call msync().