Fix docx table issue. (#5117)

### What problem does this PR solve?

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

rag/app/naive.py

@@ -116,6 +116,8 @@ class Docx(DocxParser):
                         if c.text == r.cells[j].text:
                             span += 1
                             i = j
+                        else:
+                            break
                     i += 1
                     html += f"<td>{c.text}</td>" if span == 1 else f"<td colspan='{span}'>{c.text}</td>"
                 html += "</tr>"