Update CLA link to not contain the trailing slash

[mmv08]

For some reason the link with a trailing slash leads to a 404 page

[github-actions[bot]]

Pull Request Test Coverage Report for Build 5520354237

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 7 unchanged lines in 1 file lost coverage.
• Overall coverage decreased (-1.4%) to 92.673%

---

Files with Coverage Reduction	New Missed Lines	%
contracts/SafeL2.sol	7	0%
<!--	Total:	7		-->

Totals
Change from base Build 5455689115:	-1.4%
Covered Lines:	311
Relevant Lines:	333

---

💛 - Coveralls