feat: rename exposed indicator labels

[gulfaraz]

Describe your changes

1. Indicator labels are updated

resolves https://github.com/rodekruis/Anticipatory-Action/issues/644

Checklist before requesting a review

• [x] I have performed a self-review of my code
• [x] I have added tests wherever relevant
• [x] I have made sure that all automated checks pass before requesting a review

[gulfaraz]

> test:api:all
> node --expose-gc node_modules/.bin/jest --config=jest.api.config.js --runInBand --detectOpenHandles --logHeapUsage

ts-jest[versions] (WARN) Version 4.9.5 of typescript installed has not been tested with ts-jest. If you're experiencing issues, consider using a supported version (>=2.7.0 <4.0.0). Please do not report issues in ts-jest if you are using unsupported versions.
 PASS  test/email/floods/email-uga-floods.test.ts (30.89s, 80 MB heap size)
  Should send an email for uga floods
    ✓ default (7208ms)
    ✓ warning (7224ms)
    ✓ warning-to-trigger (8060ms)
    ✓ no-trigger (7863ms)

 PASS  test/email/floods/email-ssd-floods.test.ts (15.278s, 80 MB heap size)
  Should send an email for ssd floods
    ✓ default (7580ms)
    ✓ no-trigger (7601ms)

 PASS  test/email/drought/email-uga-drought.test.ts (17.138s, 81 MB heap size)
  Should send an email for uga drought
    ✓ triggered in january (9083ms)
    ✓ non triggered any month (7958ms)

 PASS  test/email/typhoon/email-phl-typhoon.test.ts (11.552s, 88 MB heap size)
  Should send an email for phl typhoon
    ✓ default (11462ms)

Test Suites: 4 passed, 4 total
Tests:       9 passed, 9 total
Snapshots:   0 total
Time:        75.196s
Ran all test suites.