Fix civ names

Author: HSZemi

src/languages/en_GB.json

@@ -16,10 +16,10 @@
     "Aztecs": "Aztecs",
     "Huns": "Huns",
     "Koreans": "Koreans",
-    "Mayans": "Mayans",
+    "Mayans": "Maya",
     "Spanish": "Spanish",
     "Italians": "Italians",
-    "Incas": "Incas",
+    "Incas": "Inca",
     "Indians": "Indians",
     "Magyars": "Magyars",
     "Slavs": "Slavs",

src/languages/zh_CN.json

@@ -50,7 +50,7 @@
     "Athenians": "雅典",
     "Spartans": "斯巴达",
     "Shu": "蜀",
-    "Wu": "蜀",
+    "Wu": "吴",
     "Wei": "魏",
     "Jurchens": "女真",
     "Khitans": "契丹",