fix incorrect ordinal translations

src/locales/en.json

@@ -250,7 +250,7 @@
             "long": "December"
         },
         "monthDayOrdinal": {
-            "1": "1th",
+            "1": "1st",
             "2": "2nd",
             "3": "3rd",
             "4": "4th",
@@ -270,7 +270,7 @@
             "18": "18th",
             "19": "19th",
             "20": "20th",
-            "21": "21th",
+            "21": "21st",
             "22": "22nd",
             "23": "23rd",
             "24": "24th",
@@ -280,7 +280,7 @@
             "28": "28th",
             "29": "29th",
             "30": "30th",
-            "31": "31th"
+            "31": "31st"
         },
         "quarter": {
             "q1": "Q1",