feat(options/other): improve descriptions

apps/client/src/translations/en/translation.json

@@ -1360,7 +1360,7 @@
   },
   "search_engine": {
     "title": "Search Engine",
-    "custom_search_engine_info": "If either the name or URL is not set, DuckDuckGo will be used as the default.",
+    "custom_search_engine_info": "Used when searching the web for selected text. If not configured, DuckDuckGo will be used.",
     "predefined_templates_label": "Predefined templates",
     "bing": "Bing",
     "baidu": "Baidu",
@@ -1375,7 +1375,8 @@
   },
   "tray": {
     "title": "System Tray",
-    "enable_tray": "Enable tray (Trilium needs to be restarted for this change to take effect)"
+    "enable_tray": "Tray icon",
+    "enable_tray_description": "Trilium needs to be restarted for this change to take effect."
   },
   "text_editor": {
     "title": "Editor"

apps/client/src/widgets/type_widgets/options/other.tsx

@@ -115,6 +115,7 @@ function TrayOptionsSettings() {
             <OptionsRowWithToggle
                 name="tray-enabled"
                 label={t("tray.enable_tray")}
+                description={t("tray.enable_tray_description")}
                 currentValue={!disableTray}
                 onChange={trayEnabled => setDisableTray(!trayEnabled)}
             />