fix: make "no url" message more understandable

Author: L-a-r-t

Diff for: assets/locales/en/messages.json

@@ -88,7 +88,7 @@
     "description": "Slow search message."
   },
   "settings_noUrlProperty": {
-    "message": "This DB doesn't have an URL property",
+    "message": "Add an URL proprty to this DB inside Notion to use it",
     "description": "No URL property message."
   },
   "wrongpage_goTo": {

Diff for: assets/locales/fr/messages.json

@@ -88,7 +88,7 @@
     "description": "Slow search message."
   },
   "settings_noUrlProperty": {
-    "message": "Cette base de données n'a pas de propriété URL.",
+    "message": "Ajoutez une propriété URL à cette BDD dans Notion pour l'utiliser",
     "description": "No URL property message."
   },
   "wrongpage_goTo": {

Diff for: src/popup/SettingsPopup.tsx

@@ -126,7 +126,7 @@ function SettingsPopup() {
             )}
           </div>
           {fetching && <p>{i18n("settings_slowSearch")}</p>}
-          {dbError && <p className="text-red-500">{dbError}</p>}
+          {dbError && <p className="text-red-500 text-sm">{dbError}</p>}
           {results && (
             <div className="mt-1">
               {/* <h3 className="text-lg font-bold">Databases</h3> */}