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). These URLs were switched to an https URL with a 2xx status. While the status was successful, your review is still recommended. * [ ] http://geode.apache.org/ with 1 occurrences migrated to: https://geode.apache.org/ ([https](https://geode.apache.org/) result 200). * [ ] http://geode.apache.org/docs/guide/16/reference/topics/gemfire_properties.html with 1 occurrences migrated to: https://geode.apache.org/docs/guide/16/reference/topics/gemfire_properties.html ([https](https://geode.apache.org/docs/guide/16/reference/topics/gemfire_properties.html) result 200). * [ ] http://projects.spring.io/spring-data-gemfire/ with 1 occurrences migrated to: https://projects.spring.io/spring-data-gemfire/ ([https](https://projects.spring.io/spring-data-gemfire/) result 200). Resolves gh-8.