Update README.md

Author: Nick

README.md

@@ -2,10 +2,9 @@
 AVL tree realisation using Python 3
 
 In this realisation of AVL tree I have the following methods:
-     - create nodes in the tree (the tree creates nodes and checks it self
-     to keep the tree balanced);
-     - find height of the tree;
-     - search nodes in the tree;
-     - display all nodes in the tree;
-     - delete nodes in the tree (keeping the tree balanced);
-     - display number of all nodes in the tree;
+- create nodes in the tree (the tree creates nodes and checks it self to keep the tree balanced);
+- find height of the tree;
+- search nodes in the tree;
+- display all nodes in the tree;
+- delete nodes in the tree (keeping the tree balanced);
+- display number of all nodes in the tree;