Incorrect korean translation of brave stats in NTP

[simonhong]

saved is translated to 저장됨 but 저장됨 meaning is more close to stored.
Also Bandwidth is translated to 대역폭 but I think 데이터 would be better.
In Android, 데이터 is used. Android NTP uses 데이터 저장됨.
For Bandwidth saved, 데이터 절약됨 would be much better.

Time saved also has same. I think 절약됨 is more better for saved in this context.
Fro Time saved, 시간 절약됨 would be much better for delivering our behavior.

[rebron]

cc: @mkarolin

[mkarolin]

@simonhong would you mind fixing on Transifex:
https://www.transifex.com/brave/brave/translate/#ko/$/156854277?q=text%3A'Time+saved'
https://www.transifex.com/brave/brave/translate/#ko/$/283247917?q=text%3A'Bandwidth+saved'

I fixed a couple but wasn't sure about some other occurrences. I can pull them down afterwards.

[simonhong]

@mkarolin Yup, I asked to join transifex today because my existing account seems not working now.
Will check after my join request is accepted.

[simonhong]

@mkarolin added some more fixes there.

[srirambv]

Issue not fixed on Android. #13790 logged as a followup.

[LaurenWags]

Verified passed with

Brave | 1.19.87 Chromium: 88.0.4324.96 (공식 빌드) (x86_64)
-- | --
개정 | 68dba2d8a0b149a1d3afac56fa74648032bcf46b-refs/branch-heads/4324@{#1784}
OS | macOS 버전 10.15.7(빌드 19H15)

Confirmed updated translations on NTP for Bandwidth saved and Time saved

1.19.86	1.19.87

---

Verification passed on

Brave	1.19.87 Chromium: 88.0.4324.96 (Official Build) (64-bit)
Revision	68dba2d8a0b149a1d3afac56fa74648032bcf46b-refs/branch-heads/4324@{#1784}
OS	Ubuntu 18.04 LTS

Confirmed updated translations on NTP for Bandwidth saved and Time saved

---

Verification passed on

Brave | 1.19.87 Chromium: 88.0.4324.96 (공식 빌드) (64비트)
-- | --
개정 | 68dba2d8a0b149a1d3afac56fa74648032bcf46b-refs/branch-heads/4324@{#1784}
OS | Windows 10 OS Version 2004 (Build 19041.746)

Confirmed updated translations on NTP for Bandwidth saved and Time saved

1.19.86	1.19.87