Correct docstring of new_vec method (#19)

- Correct docstring of new_vec method: it returns a column vector
- Add correction to Python documentation

src/api/python.rs

@@ -8765,7 +8765,7 @@ impl PythonMatrix {
         })
     }
 
-    /// Create a new row vector from a list of scalars.
+    /// Create a new column vector from a list of scalars.
     #[classmethod]
     pub fn vec(
         _cls: &PyType,

src/tensors/matrix.rs

@@ -59,7 +59,7 @@ impl<F: Ring> Matrix<F> {
         m
     }
 
-    /// Create a new row vector from a list of scalars.
+    /// Create a new column vector from a list of scalars.
     pub fn new_vec(data: Vec<F::Element>, field: F) -> Matrix<F> {
         Matrix {
             nrows: data.len() as u32,

symbolica.pyi

@@ -2768,7 +2768,7 @@ class Matrix:
 
     @classmethod
     def vec(cls, entries: Sequence[RationalPolynomial | Polynomial | Expression | int]) -> Matrix:
-        """Create a new row vector from a list of scalars."""
+        """Create a new column vector from a list of scalars."""
 
     @classmethod
     def from_linear(cls, nrows: int, ncols: int, entries: Sequence[RationalPolynomial | Polynomial | Expression | int]) -> Matrix: