remove ref to framagit

INSTALL.md

@@ -5,7 +5,7 @@ You are advised to used [standard blaar install](https://framagit.org/blaar/blaa
 
 Manual install with cmake
 -------------------------
-You need to install [**blc_core**](https://framagit.org/blaar/blc_core) first. The libraries **jpeglib** and **pnglib** are advised for more functionalities.
+You need to install [**blc_core**](https://promethe.u-cergy.fr/blibs/blc_core) first. The libraries **jpeglib** and **pnglib** are advised for more functionalities.
 
 - Ubuntu: 
 
@@ -20,7 +20,7 @@ brew install libpng libjpeg
 You can copy past the following code:
 
 ```sh
-git clone https://framagit.org/blaar/blc_image.git
+git clone https://promethe.u-cergy.fr/blibs/blaar/blc_image.git
 cd blc_image
 mkdir build
 cd build