fix: add missing i18n for Search (#102)

* feat(i18n): add missing `Search` key

* fix: update i18n text

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Co-authored-by: saicaca <zephyird@gmail.com>

src/i18n/i18nKey.ts

@@ -2,6 +2,7 @@ enum I18nKey {
   home = 'home',
   about = 'about',
   archive = 'archive',
+  search = 'search',
 
   tags = 'tags',
   categories = 'categories',
@@ -22,7 +23,7 @@ enum I18nKey {
 
   themeColor = 'themeColor',
 
-  lightMode =  'lightMode',
+  lightMode = 'lightMode',
   darkMode = 'darkMode',
   systemMode = 'systemMode',