message: Fix Harappan republic name
diff: <Spanish>Indus Valley City States</Spanish>
  </TEXT>
  <TEXT>
  - <Tag>TXT_KEY_CIV_HARAPPA_DEMOCRATIC</Tag>
  + <Tag>TXT_KEY_CIV_HARAPPA_REPUBLIC</Tag>
  <English>Indus River Republic</English>
  <French>
  <Text>R&#233;publique du Fleuve Indus</Text>
  