INTPYTHON-667 Fix setup-remote script (#85)

Author: blink1073

.evergreen/setup-remote.sh

@@ -56,7 +56,7 @@ echo "export VOYAGEAI_S3_BUCKET=$VOYAGEAI_S3_BUCKET" >> env.sh
 echo "export AZURE_OPENAI_ENDPOINT=$AZURE_OPENAI_ENDPOINT" >> env.sh
 echo "export AZURE_OPENAI_API_KEY=$AZURE_OPENAI_API_KEY" >> env.sh
 echo "export OPENAI_API_VERSION=$OPENAI_API_VERSION" >> env.sh
-echo "export MONGODB_URI=$CONN_STRING" >> env.sh
+echo "export MONGODB_URI=$MONGODB_URI" >> env.sh
 echo "export VOYAGEAI_API_KEY=$VOYAGEAI_API_KEY" >> env.sh
 
 # Ensure the remote database is populated.