URL Cleanup

[spring-operator]

This commit updates URLs to prefer the https protocol. Redirects are not followed to avoid accidentally expanding intentionally shortened URLs (i.e. if using a URL shortener).

Fixed URLs

Fixed Success

These URLs were switched to an https URL with a 2xx status. While the status was successful, your review is still recommended.

• [ ] http://docs.spring.io/platform/docs/1.0.1.RELEASE/reference/htmlsingle/ with 1 occurrences migrated to:
  https://docs.spring.io/platform/docs/1.0.1.RELEASE/reference/htmlsingle/ (https result 200).
• [ ] http://maven.apache.org/xsd/maven-4.0.0.xsd with 9 occurrences migrated to:
  https://maven.apache.org/xsd/maven-4.0.0.xsd (https result 200).
• [ ] http://plugins.gradle.org/plugin/io.spring.dependency-management with 1 occurrences migrated to:
  https://plugins.gradle.org/plugin/io.spring.dependency-management (https result 200).
• [ ] http://tbaggery.com/2008/04/19/a-note-about-git-commit-messages.html with 1 occurrences migrated to:
  https://tbaggery.com/2008/04/19/a-note-about-git-commit-messages.html (https result 200).
• [ ] http://contributor-covenant.org with 1 occurrences migrated to:
  https://contributor-covenant.org (https result 301).
• [ ] http://contributor-covenant.org/version/1/3/0/ with 1 occurrences migrated to:
  https://contributor-covenant.org/version/1/3/0/ (https result 301).
• [ ] http://gradle.org/docs/current/dsl/org.gradle.api.artifacts.ResolutionStrategy.html with 1 occurrences migrated to:
  https://gradle.org/docs/current/dsl/org.gradle.api.artifacts.ResolutionStrategy.html (https result 302).

Ignored

These URLs were intentionally ignored.

• http://maven.apache.org/POM/4.0.0 with 18 occurrences
• http://www.w3.org/2001/XMLSchema-instance with 9 occurrences