sorry. fix maintainer name and email

(was cherry-picking from my own projects…)

[skip ci]

Author: Andrey Korobkov

CONTRIBUTING.md

@@ -55,7 +55,7 @@ further defined and clarified by project maintainers.
 ## Enforcement
 
 Instances of abusive, harassing, or otherwise unacceptable behavior may be
-reported by contacting the project maintainer at [Andrey Korobkov][email]. All
+reported by contacting the project maintainer at [Sergio Cambra][email]. All
 complaints will be reviewed and investigated and will result in a response that
 is deemed necessary and appropriate to the circumstances. The project team is
 obligated to maintain confidentiality with regard to the reporter of an incident.
@@ -70,6 +70,6 @@ members of the project's leadership.
 This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 1.4,
 available at [http://contributor-covenant.org/version/1/4][version]
 
-[email]: mailto:[email protected]
+[email]: mailto:[email protected]
 [homepage]: http://contributor-covenant.org
 [version]: http://contributor-covenant.org/version/1/4/