fix: auto-numbering format 1. 2. 3.

tiku-server/app/services/docx_builder.py

@@ -203,7 +203,7 @@ def _setup_auto_numbering(doc: Document):
     lvl.append(num_fmt)
 
     lvl_text = OxmlElement('w:lvlText')
-    lvl_text.set(qn('w:val'), '%1．')
+    lvl_text.set(qn('w:val'), '%1.')
     lvl.append(lvl_text)
 
     lvl_jc = OxmlElement('w:lvlJc')