fix: update the titleSelector to h2 for npm. #135

[maurycupitt]

fixes #135

[paul-botsco-2-0[bot]]

Thanks for the contribution. Unfortunately some of your commits don't meet our standards. All commits must be signed and have author information set.

The commits to review are:

• c8f5ff4e25198d1c88608022a3aaeade844bb7fc - unsigned commit :key:

See Signed Commits.

[brent-spiner]

:tada: This PR is included in version 2.19.1 :tada:

The release is available on:

• Chrome Web Store
• v2.19.1
• GitHub release

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