fix: upstream address

Dockerfile.photovoter-backend

@@ -15,7 +15,7 @@ RUN apt-get update && \
 # Pull backend
 RUN mkdir --parents $DATA_LOCATION/original $DATA_LOCATION/image && \
     cd $BACKEND_LOCATION && \
-    git clone --depth=1 https://git.iamonlyherefortheicecream.ml/w2/photovoter_backend.git
+    git clone --depth=1 https://git.iamonlyherefortheicecream.ml/DIWHY/photovoter_backend.git
 
 # Install backend requirements
 RUN cd $BACKEND_LOCATION && \