Update stack.env

Author: JPar99

docker/stack.env

@@ -61,7 +61,7 @@ POWERTOOLS_VERSION=0.18.0          # Pin PowerTools version (matches GitHub rele
 # -------------------
 IMMICH_API_KEY=apikeyforpowertools  # Use Immich "Master API Key" (Admin, full privileges)
 IMMICH_URL=http://internalip:8212   # Internal URL of Immich (match NAS IP + Immich port in compose)
-EXTERNAL_IMMICH_URL=                # Optional: public URL if Immich is exposed externally
+EXTERNAL_IMMICH_URL=                # Optional: When you click a photo in powertools, it redirects you to your immich instance photo
 
 DB_PORT=5432                        # Default Postgres port
 DB_HOST=immich-db                   # PowerTools expects DB_HOST (must equal DB_HOSTNAME above!)