chore(filtersSpec): fix typo

Author: Lajos Veres

test/ng/filter/filtersSpec.js

@@ -58,7 +58,7 @@ describe('filters', function() {
       expect(num).toBe('1.1112');
     });
 
-    it('should format according different seperators', function() {
+    it('should format according different separators', function() {
       var num = formatNumber(1234567.1, pattern, '.', ',', 2);
       expect(num).toBe('1.234.567,10');
     });