Changed orders of docstring descriptions for polynomial_kernel

Author: hlin117

sklearn/metrics/pairwise.py

@@ -730,13 +730,13 @@ def polynomial_kernel(X, Y=None, degree=3, gamma=None, coef0=1):
 
     Y : ndarray of shape (n_samples_2, n_features)
 
+    degree : int, default 3
+
     gamma : float, default None
         if None, defaults to 1.0 / n_samples_1
 
     coef0 : int, default 1
 
-    degree : int, default 3
-
     Returns
     -------
     Gram matrix : array of shape (n_samples_1, n_samples_2)