Corrected version numbers (#845)

Version numbers were incorrect so fixed it.

Author: praneeth-m

changelog.md

@@ -1,11 +1,11 @@
-### `0.5.29` _2020-02-21_
+### `0.5.28` _2020-02-21_
 Merged pull request #410 from @adgrace:
 * Added a method `moment.tz.zonesForCountry(country_code)` which returns all timezones for the country
 * Added a method `moment.tz(timezone_id).countries()` to get countries for some time zone
 * Added a method `moment.tz.countries()` to get all country codes
 * And as you know `moment.tz.zones()` already exists
 
-### `0.5.28` _2019-10-14_
+### `0.5.27` _2019-10-14_
 * Updated data to IANA TZDB `2019c`
 
 ### `0.5.26` _2019-06-06_