.stringsdict Pluralization

.stringsdict files always need to have a accompanying .strings file with that same name and th base string.

Website: https://developer.apple.com/library/archive/documentation/MacOSX/Conceptual/BPInternational/LocalizingYourApp/LocalizingYourApp.html

Example:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
  <dict>
    <key>plural_key</key>
    <dict>
      <key>NSStringLocalizedFormatKey</key>
      <string>%#@applanga_plural@</string>
      <key>applanga_plural</key>
      <dict>
        <key>NSStringFormatSpecTypeKey</key>
        <string>NSStringPluralRuleType</string>
      </dict>
    </dict>
  </dict>
</plist>