Update README for problem 763

Author: anirudhology

README.md

@@ -131,6 +131,7 @@ LeetCode solutions in Python
 | 704        | Binary Search                                             | [Solution](problems/binary_search/binary_search.py)                                        | Easy       | Binary Search                         |
 | 739        | Daily Temperatures                                        | [Solution](problems/stack/daily_temperatures.py)                                           | Medium     | Stack, Monotonic Stack                |
 | 746        | Min Cost Climbing Stairs                                  | [Solution](problems/dynamic_programming/min_cost_climbing_stairs.py)                       | Easy       | Dynamic Programming                   |
+| 763        | Partition Labels                                          | [Solution](problems/greedy/partition_labels.py)                                            | Medium     | Greedy                                |
 | 846        | Hand Of Straights                                         | [Solution](problems/greedy/hand_of_straights.py)                                           | Medium     | Greedy, Heap                          |
 | 853        | Car Fleet                                                 | [Solution](problems/stack/car_fleet.py)                                                    | Medium     | Stack, Monotonic Stack                |
 | 875        | Koko Eating Bananas                                       | [Solution](problems/binary_search/koko_eating_bananas.py)                                  | Medium     | Binary Search                         |