deploy: Update Makefile for environment file check.

Changed the error message in the Makefile to reference .env.development
instead of .env. This ensures consistency with the project’s development
environment setup.

Signed-off-by: Nikolay Martyanov <nikolay@zededa.com>

deployment/Makefile

@@ -19,7 +19,7 @@ REQUIRED_ENV_VARS = DB_NAME DB_USER DB_PASSWORD GADM_FILE POSTGIS_VERSION
 # ---- Environment Checks ----
 check-env:
 	@if [ ! -f $(ENV_FILE) ]; then \
-		echo "Error: .env file is missing. Initialize it from .env.example."; \
+		echo "Error: .env.development file is missing. Initialize it from .env.development.example."; \
 		exit 1; \
 	fi
 	@for var in $(REQUIRED_ENV_VARS); do \