Update blsjs.d.ts

[BubbleTrouble14]

Updated blsjs.d.ts type inside the G1Element generator to return G1Element and not G2Element, or is this already correct ?

[coveralls-official[bot]]

Pull Request Test Coverage Report for Build 7634832904

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 94.649%

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Totals
Change from base Build 7631464555:	0.0%
Covered Lines:	1645
Relevant Lines:	1738

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💛 - Coveralls

[github-actions[bot]]

'This PR has been flagged as stale due to no activity for over 60 days. It will not be automatically closed, but it has been given a stale-pr label and should be manually reviewed.'

[BubbleTrouble14]

Ah sorry. I'll close this pull request and open a new one with the correct fix.