fix test bug

Author: haozhihan

source/module_psi/test/psi_test.cpp

@@ -8,7 +8,7 @@ class TestPsi : public ::testing::Test
       const int ink = 2;
     const int inbands = 4;
     const int inbasis = 10;
-    std::vector<int> ngk = {10, 10};
+    std::vector<int> ngk = {10, 10, 10, 10};
 
     const psi::Psi<std::complex<double>>* psi_object31 = new psi::Psi<std::complex<double>>(ink, inbands, inbasis, ngk, true);
     const psi::Psi<double>* psi_object32 = new psi::Psi<double>(ink, inbands, inbasis, ngk, true);