doppler.sh: use bash, update retired radar URL, fix curl error message

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

doppler.sh

@@ -1,7 +1,7 @@
-#!/bin/sh
+#!/bin/bash
 # doppler.sh
 
-RADAR_IMAGE_URL="https://radar.weather.gov/lite/N0R/FSX_loop.gif"
+RADAR_IMAGE_URL="https://radar.weather.gov/ridge/standard/KFSX_loop.gif"
 VIDEO_PLAYER=/usr/bin/mpv
 LINK_DOWNLOADER=/usr/bin/curl
 FORECAST_URL="wttr.in"
@@ -16,9 +16,9 @@ if [[ ! -f "${VIDEO_PLAYER}" ]];then
 fi
 
 if [[ ! -f "${LINK_DOWNLOADER}" ]];then
-	echo "${VIDEO_PLAYER} not found"
+	echo "${LINK_DOWNLOADER} not found"
 	echo "Please install it with your system's package manager"
-	notify-send "${VIDEO_PLAYER} not found" "Please install it with your system's package manager"
+	notify-send "${LINK_DOWNLOADER} not found" "Please install it with your system's package manager"
 	exit 1
 fi