Update the Notebook theme tiddler (#5387)

* Update the title to be shorter.
* Update the description to follow the description on
  https://nicolas.petton.fr/tw/notebook.html.

editions/tw5.com/tiddlers/community/themes/Notebook theme by Nicolas Petton.tid

@@ -1,11 +1,11 @@
 created: 20210101154635213
-modified: 20210101201435693
+modified: 20210110210929321
 tags: [[Community Themes]]
-title: "Notebook, a clean, uncluttered theme for TiddlyWiki" by Nicolas Petton
+title: "Notebook theme" by Nicolas Petton
 type: text/vnd.tiddlywiki
 url: https://nicolas.petton.fr/tw/notebook.html
 
-A theme that give TiddlyWiki a modern look.
+Notebook is a clean, uncluttered theme for ~TiddlyWiki.
 
 {{!!url}}
 
@@ -16,4 +16,4 @@ Notebook is a clean, uncluttered theme for TiddlyWiki.
 * Notebook comes with 3 default colour palettes, a grey, beige and dark one. To switch between colour palettes, click the color palette switch button in the top bar.
 * Notebook uses a custom left sidebar, with another sticky bar at the top of the page (or at the bottom on mobile).
 
-<<<
+<<<