Fix link to commit activity in readme (#266)

Author: Joshua Wade

README.md

@@ -1,7 +1,7 @@
 # ![C++](https://img.shields.io/badge/c++-%2300599C.svg?style=for-the-badge&logo=c%2B%2B&logoColor=white) reflect-cpp
 
 [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
-[![Maintenance](https://img.shields.io/badge/Maintained%3F-yes-green.svg)](https://GitHub.com/Naereen/StrapDown.js/graphs/commit-activity)
+[![Maintenance](https://img.shields.io/badge/Maintained%3F-yes-green.svg)](https://github.com/getml/reflect-cpp/graphs/commit-activity)
 [![Generic badge](https://img.shields.io/badge/C++-20-blue.svg)](https://shields.io/)
 [![Generic badge](https://img.shields.io/badge/gcc-11+-blue.svg)](https://shields.io/)
 [![Generic badge](https://img.shields.io/badge/clang-14+-blue.svg)](https://shields.io/)