Rename 2 sum cpp.txt to 2 sum cpp.md

DARKcoder37 · web-flow · commit da58f218c462 · 2023-04-11T22:51:17.000+05:30
diff --git a/Problem Solution/1) 2 sum (easy)/2 sum cpp.md b/Problem Solution/1) 2 sum (easy)/2 sum cpp.md
@@ -41,4 +41,4 @@ public:
         }
         return ret;
     }
-};
+};
