docs: update repo url

README.md

@@ -38,7 +38,7 @@ It prioritizes **Obs4MIPs** tables as a reference for variable definitions, then
 ## ⚙️ Installation
 
 ```bash
-git clone --recursive https://your.repo.url era5-tables
+git clone --recursive https://gitlab.dkrz.de/bm1159/cosodax/era5-tables era5-tables
 cd era5-tables
 make install
 ```