fix other docs

Author: hitonanode

linear_algebra_matrix/hafnian.md

@@ -13,4 +13,3 @@ documentation_of: ./hafnian.hpp
 
 - [1] A. Björklund, "Counting Perfect Matchings as Fast as Ryser,
   Proc. of 23rd ACM-SIAM symposium on Discrete Algorithms, pp.914–921, 2012.
-

linear_algebra_matrix/linalg_bitset.md

@@ -1,5 +1,5 @@
 ---
-title: Linear algebra on $\mathbb{F}_{2}$ using std::bitset ($\mathbb{F}_{2}$ 線形代数)
+title: Linear algebra on $\mathbb{F}_{2}$ using std::bitset (std::bitset を使用した $\mathbb{F}_{2}$ 線形代数)
 documentation_of: ./linalg_bitset.hpp
 ---