bugfix: パッケージコピー時に隠しファイルも含めるよう修正

WORKFLOW/SECTIONS/base/02_experimental_phase/launch_an_experiment.ipynb

@@ -94,7 +94,7 @@
     "!mkdir ~/.tmp/\n",
     "!git init ~/.tmp/$repository_title\n",
     "# !datalad create ~/.tmp/$repository_title\n",
-    "!cp -r ~/WORKFLOW/PACKAGE/* ~/.tmp/$repository_title/\n",
+    "!cp -r ~/WORKFLOW/PACKAGE/. ~/.tmp/$repository_title/\n",
     "\n",
     "%cd ~/.tmp/$repository_title\n",
     "!git add ~/.tmp/$repository_title\n",