chore: fix solidity warning

[danyalprout]

Description

Fix the solidity warning that appears when running just ci.

No files changed, compilation skipped
note[mixed-case-function]: function names should use mixedCase
  --> src/AccessList.sol:37:14
   |
37 |     function getAB() public view returns (uint128, uint128) {
   |              ^^^^^ help: consider using: `getAb`
   |
   = help: https://book.getfoundry.sh/reference/forge/forge-lint#mixed-case-function

[cb-heimdall]

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