fix: improve update_script function by enhancing structure and readability

ct/localagi.sh

@@ -52,12 +52,10 @@ function update_script() {
 		$STD go build -o /usr/local/bin/localagi || {
 		msg_error "Failed to build LocalAGI from source"
 		exit 1
-  fi
+		systemctl enable -q --now localagi
 		exit
 		}
-
-  systemctl enable -q --now localagi
-
+	fi
 		exit
 }