Changed the example and added some description

Author: RuchitJagodara

src/sage/groups/perm_gps/permgroup.py

@@ -4108,14 +4108,14 @@ def isomorphism_type_info_simple_group(self):
 
     def minimal_normal_subgroups(self):
         """
-        Return a list containing all minimal normal subgroups of the group.
+        Return a list containing those nontrivial normal subgroups of the group that are minimal among the nontrivial normal subgroups.
 
         EXAMPLES::
 
-        sage: G = PermutationGroup([(1,2,3),(4,5)])
-        sage: G.minimal_normal_subgroups()
-        [Subgroup generated by [(4,5)] of (Permutation Group with generators [(4,5), (1,2,3)]),
-         Subgroup generated by [(1,2,3)] of (Permutation Group with generators [(4,5), (1,2,3)])]
+            sage: G = PermutationGroup([(1,2,3),(4,5)])
+            sage: G.minimal_normal_subgroups()
+            [Subgroup generated by [(4,5)] of (Permutation Group with generators [(4,5), (1,2,3)]),
+             Subgroup generated by [(1,2,3)] of (Permutation Group with generators [(4,5), (1,2,3)])]
         """
         gap_subgroups = self.gap().MinimalNormalSubgroups()
         sage_subgroups = [self.subgroup(gap_group=gap_subgroup) for gap_subgroup in gap_subgroups]
@@ -4128,9 +4128,10 @@ def maximal_normal_subgroups(self):
 
         EXAMPLES::
 
-            sage: G = SymmetricGroup(4)
+            sage: G = PermutationGroup([(1,2,3),(4,5)])
             sage: G.maximal_normal_subgroups()
-            [Subgroup generated by [(2,3,4), (1,2,3)] of (Symmetric group of order 4! as a permutation group)]
+            [Subgroup generated by [(1,2,3)] of (Permutation Group with generators [(4,5), (1,2,3)]),
+             Subgroup generated by [(4,5)] of (Permutation Group with generators [(4,5), (1,2,3)])]
         """
         gap_subgroups = self.gap().MaximalNormalSubgroups()
         sage_subgroups = [self.subgroup(gap_group=gap_subgroup) for gap_subgroup in gap_subgroups]