change sign format

.idea/markdown-exported-files.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="MarkdownExportedFiles">
+    <htmlFiles />
+    <imageFiles />
+    <otherFiles />
+  </component>
+</project>

main.py

@@ -143,8 +143,7 @@ def _sign_text(text, m: Message, limit):
     sign = ''
     if text.startswith('!sign') or text.startswith('/sign'):
         text = text[5:]
-        sign = f'\n\n____________\n' \
-               f'by <a href="tg://user?id={m.from_user.id}">{escape(m.from_user.full_name)}</a>'
+        sign = f'\n\n — <a href="tg://user?id={m.from_user.id}">{escape(m.from_user.full_name)}</a>'
 
     return text[:limit - len(sign)] + sign