Merge pull request sympy#25858 from smichr/quatdoc

correct quaternion docstring for intrinsic/extrinsic

sympy/algebras/quaternion.py

@@ -383,9 +383,9 @@ def from_euler(cls, angles, seq):
             The Euler angles (in radians).
         seq : string of length 3
             Represents the sequence of rotations.
-            For intrinsic rotations, seq must be all lowercase and its elements
+            For extrinsic rotations, seq must be all lowercase and its elements
             must be from the set ``{'x', 'y', 'z'}``
-            For extrinsic rotations, seq must be all uppercase and its elements
+            For intrinsic rotations, seq must be all uppercase and its elements
             must be from the set ``{'X', 'Y', 'Z'}``
 
         Returns
@@ -448,9 +448,9 @@ def to_euler(self, seq, angle_addition=True, avoid_square_root=False):
 
         seq : string of length 3
             Represents the sequence of rotations.
-            For intrinsic rotations, seq must be all lowercase and its elements
+            For extrinsic rotations, seq must be all lowercase and its elements
             must be from the set ``{'x', 'y', 'z'}``
-            For extrinsic rotations, seq must be all uppercase and its elements
+            For intrinsic rotations, seq must be all uppercase and its elements
             must be from the set ``{'X', 'Y', 'Z'}``
 
         angle_addition : bool