Update readme with new formatting system.

README.md

@@ -40,7 +40,7 @@ Usage: python3 gelbooru-bot.py [--gen-config] [--help]
     "hololive_images": {
         "gelbooru_tags": "hololive",
         "gelbooru_tags_exclude": "-sky",
-        "bot_message": ["Hololive Image", "Uooooh"],
+        "bot_message": ["Hololive Image $dh$\n$gel_src$\n$src$", "Uooooh $dh$\n$gel_src$\n$src$"],
         "bot_hashtags": "#hololive",
         "misskey_token": "uuuu0hOhrrrlrlrP8888uquqaaaaAUAU",
         "max_page_number": 200,
@@ -49,7 +49,7 @@ Usage: python3 gelbooru-bot.py [--gen-config] [--help]
     "kancolle": {
         "gelbooru_tags": "{kantai_collection ~ boat_girl}",
         "gelbooru_tags_exclude": "",
-        "bot_message": ".",
+        "bot_message": "$dh$\n$gel_src$\n$src$",
         "bot_hashtags": "#kancolle",
         "misskey_token": "HHkkuuuutdtdrrrrvWvW8888yayaaaaa",
         "max_page_number": 200,
@@ -59,6 +59,13 @@ Usage: python3 gelbooru-bot.py [--gen-config] [--help]
 }
 ```
 
+Message formatting:
+
+- `$dh$` : Daily hashtag
+- `$gel_src$` : Gelbooru link
+- `$src$` : Original source
+
+Other fields:
 
 - `max_page_number:` Automatically determined by the script.