docs(transaction): fix typo

[aGolduck]

Subsections of "Concurrent/Partial transactions" in transactions.md
should be "WITH CLS enabled" instead of "WITHOUT CLS enabled".
See comment in the code below section header

Pull Request check-list

Please make sure to review and check all of these items:

• Does npm run test or npm run test-DIALECT pass with this change (including linting)?
• Does the description below contain a link to an existing issue (Closes #[issue]) or a description of the issue you are solving?
• Have you added new tests to prevent regressions?
• Is a documentation update included (if this change modifies existing APIs, or introduces new ones)?
• Did you update the typescript typings accordingly (if applicable)?
• Did you follow the commit message conventions explained in CONTRIBUTING.md?

Description of change

[codecov]

Codecov Report

Merging #11659 into master will increase coverage by 3.77%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master   #11659      +/-   ##
==========================================
+ Coverage   92.47%   96.24%   +3.77%     
==========================================
  Files          91       94       +3     
  Lines        8903     9190     +287     
==========================================
+ Hits         8233     8845     +612     
+ Misses        670      345     -325

Impacted Files	Coverage Δ
lib/dialects/postgres/connection-manager.js	94.36% <0%> (-1.41%)	⬇️
lib/dialects/sqlite/index.js	100% <0%> (ø)
lib/dialects/sqlite/query.js	98.65% <0%> (ø)
lib/dialects/sqlite/connection-manager.js	100% <0%> (ø)
lib/data-types.js	91.34% <0%> (+0.34%)	⬆️
lib/dialects/abstract/query-generator.js	97.01% <0%> (+0.51%)	⬆️
lib/dialects/abstract/query.js	91.98% <0%> (+0.96%)	⬆️
lib/sequelize.js	95.93% <0%> (+1.25%)	⬆️
lib/transaction.js	100% <0%> (+2.66%)	⬆️
lib/query-interface.js	92.19% <0%> (+3.41%)	⬆️
... and 4 more

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[papb]

Hello! I see you are a first-time contributor, thank you for taking the time to help Sequelize! I hope to see more PRs from you in the future!