fix: update uinqueID -> uniqueID

[ipod1g]

PR Checklist

Please check if your PR fulfills the following requirements:

• The commit message follows our guidelines: https://github.com/fasenderos/hft-limit-order-book/blob/main/CONTRIBUTING.md
• Tests for the changes have been added (for bug fixes / features)
• Docs (README.md) have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

• Bugfix
• Feature
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• CI related changes
• Other... Please describe:

What is the current behavior?

• Self explanatory in the commit message, no behavioral change, just documentation fix

Issue Number: N/A

What is the new behavior?

Does this PR introduce a breaking change?

• Yes
• No

[fasenderos]

thank you :)