style(ngLocale): change es-us lcoale currency format

change es-us locale currency format, before: $1.234,56 - after: $1,234.56

closes #8931

Author: dfalgout

src/ngLocale/angular-locale_es-us.js

@@ -64,8 +64,8 @@ $provide.value("$locale", {
   },
   "NUMBER_FORMATS": {
     "CURRENCY_SYM": "\u20ac",
-    "DECIMAL_SEP": ",",
-    "GROUP_SEP": ".",
+    "DECIMAL_SEP": ".",
+    "GROUP_SEP": ",",
     "PATTERNS": [
       {
         "gSize": 3,