Remove outdated translation key

public/locales/en.json

@@ -887,7 +887,6 @@
         "reader_width": "Reader width",
         "reading_direction": "Reading direction",
         "reading_mode": "Reading mode",
-        "scale_page": "Scale small pages",
         "show_page_number": "Show page number",
         "skip_dup_chapters": "Skip duplicate chapters",
         "static_navigation": "Static navigation"

src/modules/reader/components/overlay/navigation/desktop/quick-settings/ReaderNavBarDesktopPageScale.tsx

@@ -51,7 +51,7 @@ export const ReaderNavBarDesktopPageScale = ({
                 defaultIcon={PAGE_SCALE_VALUE_TO_DISPLAY_DATA[pageScaleMode.value].icon}
             />
             {READER_PAGE_SCALE_MODE_TO_SCALING_ALLOWED[pageScaleMode.value] && (
-                <Tooltip title={t('reader.settings.label.scale_page')}>
+                <Tooltip title={t('reader.settings.page_scale.stretch')}>
                     <CustomIconButton
                         onClick={() => updateSetting('shouldStretchPage', !shouldStretchPage.value)}
                         sx={{ minWidth: 0 }}