docs: Add GlobalX to the list of companies that use Flux

Signed-off-by: Drew Freyling <[email protected]>

README.md

@@ -94,6 +94,7 @@ container images and config changes are propagated to the cluster.
  - [Frame.io](https://frame.io)
  - [gastromatic](https://www.gastromatic.de/)
  - [Gini](https://gini.net)
+ - [GlobalX](https://globalx.com.au)
  - [Greenpass](https://www.greenpass.com.br/)
  - [happn](https://www.happn.com)
  - [HMCTS](https://www.gov.uk/government/organisations/hm-courts-and-tribunals-service)