Fix lu_factor docstring formatting

Author: vlad-perevezentsev

dpnp/linalg/dpnp_iface_linalg.py

@@ -919,19 +919,22 @@ def lu_factor(a, overwrite_a=False, check_finite=True):
     a : (M, N) {dpnp.ndarray, usm_ndarray}
         Input array to decompose.
     overwrite_a : {None, bool}, optional
-        Whether to overwrite data in `a` (may increase performance)
+        Whether to overwrite data in `a` (may increase performance).
+
         Default: ``False``.
     check_finite : {None, bool}, optional
         Whether to check that the input matrix contains only finite numbers.
         Disabling may give a performance gain, but may result in problems
         (crashes, non-termination) if the inputs do contain infinities or NaNs.
 
+        Default: ``True``.
+
     Returns
     -------
-    lu :(M, N) dpnp.ndarray
+    lu : (M, N) dpnp.ndarray
         Matrix containing U in its upper triangle, and L in its lower triangle.
         The unit diagonal elements of L are not stored.
-    piv (K, ): dpnp.ndarray
+    piv : (K, ) dpnp.ndarray
         Pivot indices representing the permutation matrix P:
         row i of matrix was interchanged with row piv[i].
         ``K = min(M, N)``.