update comments

src/stores/exchangeRates.ts

@@ -142,9 +142,9 @@ export const useExchangeRatesStore = defineStore('exchangeRates', () => {
     }
 
     return {
-        // state
+        // states
         latestExchangeRates,
-        // computed state
+        // computed states
         exchangeRatesLastUpdateTime,
         latestExchangeRateMap,
         // functions

src/stores/setting.ts

@@ -154,8 +154,10 @@ export const useSettingsStore = defineStore('settings', () => {
     }
 
     return {
+        // states
         appSettings,
         localeDefaultSettings,
+        // functions
         setTheme,
         setFontSize,
         setTimeZone,