fixed destination variable name

deploy.sh

@@ -11,8 +11,8 @@ fi
 # Check for the deploy position (with default)
 DEPLOY_DESTINATION_FILE="~/.deploy_destination"
 DEPLOY_DESTINATION="/opt"
-if [ -f "${DEPLOY_SOURCE_FILE}" ]; then
-  . "${DEPLOY_SOURCE_FILE}"
+if [ -f "${DEPLOY_DESTINATION_FILE}" ]; then
+  . "${DEPLOY_DESTINATION_FILE}"
 fi
 
 # Check if the correct usage is respected