Fixed package name for task 37.

Author: javadev

src/main/java/s0037_sudoku_solve/Solution.java renamed to src/main/java/s0037_sudoku_solver/Solution.java

@@ -1,4 +1,4 @@
-package s0037_sudoku_solve;
+package s0037_sudoku_solver;
 
 import java.util.ArrayList;
 import java.util.List;

src/test/java/s0037_sudoku_solve/SolutionTest.java renamed to src/test/java/s0037_sudoku_solver/SolutionTest.java

@@ -1,4 +1,4 @@
-package s0037_sudoku_solve;
+package s0037_sudoku_solver;
 
 import static org.hamcrest.CoreMatchers.equalTo;
 import static org.hamcrest.MatcherAssert.assertThat;