Update README.md

Author: sanakang0615

README.md

@@ -41,7 +41,7 @@ class CollaborationFramework:
 | 1 | 9/7 | ✅ |  |  |  |
 | 2 | 9/14 | ✅ |  |  |  |
 | 3 | 9/21 | ✅ |  |  |  |
-| 4 | 9/28 | ✅ |  | 권명석 |  |
+| 4 | 9/28 | ✅ |  | 권명석 | 강산아 |
 | 5 | 10/5 | ✅ |  |  |  |
 | 6 | 10/12 | ✅ |  | 조해창 |  |
 | 7 | 10/19 | ✅ |  |  |  |
@@ -50,7 +50,7 @@ class CollaborationFramework:
 | 10 | 11/9 | ✅ | 권명석, 강산아 (학회) |  |  |
 | 11 | 11/16 |  | — | — | — |
 | 12 | 11/23 | ✅ |  | 조해창 | 김시은 |
-| 13 | 11/30 | ✅ |  |  |  |
+| 13 | 11/30 | ✅ |  |  | 강산아 |
 | 14 | 12/7 | ✅ |  |  |  |
 | 15 | 12/14 | ✅ |  |  |  |
 | 16 | 12/21 | ✅ |  | — | — |