docs: update CLA information

[snitin315]

• This is a bugfix
• This is a feature
• This is a code refactor
• This is a test update
• This is a docs update
• This is a metadata update

For Bugs and Features; did you add new tests?

No

Motivation / Use-Case

Update CLA information with the new link - https://github.com/openjs-foundation/easycla

Breaking Changes

None

Additional Info

No

[codecov]

Codecov Report

Merging #3949 (4bf2503) into master (6f87042) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #3949   +/-   ##
=======================================
  Coverage   92.58%   92.58%           
=======================================
  Files          14       14           
  Lines        1362     1362           
  Branches      474      474           
=======================================
  Hits         1261     1261           
  Misses         93       93           
  Partials        8        8           

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