Fix broken CI with a run of prettier

Summary:
This Diff is fixing a broken CircleCI on OSS due to
not properly formatted .js files. See https://app.circleci.com/pipelines/github/facebook/react-native/10040/workflows/923cb408-b09c-4425-87c1-2677a7af9681/jobs/213822

The offending diff was D29986749 (ff4b336)

Changelog:
[Internal] - Fix broken CI due to not formatted js files

Reviewed By: ShikaSD

Differential Revision: D30515439

fbshipit-source-id: 560de04347a8746065981b534ed96f0956d94b9c

flow/HermesInternalType.js

@@ -58,7 +58,7 @@ declare type $HermesInternalType = {
  */
  +getRuntimeProperties?: () => {
  'OSS Release Version': string,
- 'Build': string,
+ Build: string,
  [string]: mixed,
  },