Update README.md

[uchenwankwo]

Updating event streams examples to include feat: add event streams mirroring config support + aligning numbers

https://github.com/srikant-sahu/terraform-provider-ibm/commit/2cee06aa3e0a0097708631671e8de930a0617448

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Relates OR Closes #0000

Output from acceptance testing:

$ make testacc TESTARGS='-run=TestAccXXX'

...

[HAMARDHE1]

[DO NOT MERGE this PR] We have a PR raised for such documentation update: https://github.com/IBM-Cloud/terraform-provider-ibm/pull/5767