Minor fixes for small typos in the tooltips in the benchmarks

[linear[bot]]

ENG-1048 Minor fixes for typos in tooltips.

Minor fixes for typos in the tooltips for the zk benchmark website.

[vercel[bot]]

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Name	Status	Preview	Comments	Updated (UTC)
zk-benchmarks	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Sep 17, 2023 5:37am