:pencil2: fix typo

diff --git a/docs/string/seq-automaton.md b/docs/string/seq-automaton.md
index 0ef1448..14fc04e 100644 (file)
--- a/docs/string/seq-automaton.md
+++ b/docs/string/seq-automaton.md
@@ -45,7 +45,7 @@ $$
 
 ## 例题
 
-???+note " [「HEOI2015」最短不公共子串](https://www.luogu.org/problem/P4112) ?
+???+note "[「HEOI2015」最短不公共子串](https://www.luogu.org/problem/P4112)"
 
     给你两个由小写英文字母组成的串 $A$ 和 $B$，求：