Update CODE-OF-CONDUCT.md

correct a typo

CODE-OF-CONDUCT.md

@@ -3,7 +3,7 @@
 ## Our Pledge
 
 In the interest of fostering an open and welcoming environment, we as
-contributors and maintainers pledge to making participation in our project and
+contributors and maintainers pledge to make participation in our project and
 our community a harassment-free experience for everyone, regardless of age, body
 size, disability, ethnicity, sex characteristics, gender identity and expression,
 level of experience, education, socio-economic status, nationality, personal
@@ -71,4 +71,4 @@ This Code of Conduct is adapted from the [Contributor Covenant], version 1.4,
 available at https://www.contributor-covenant.org/version/1/4/code-of-conduct.html
 
 [Contributor Covenant]: https://www.contributor-covenant.org
-[private-quorum@consensys.net]: mailto:private-quorum@consensys.net
+[private-quorum@consensys.net]: mailto:private-quorum@consensys.net