Update src/main/java/org/kohsuke/github/GHDiscussion.java
Update src/main/java/org/kohsuke/github/GHDiscussion.java

Change the visibility of the fields from protected to private. Add @JacksonInject annotation. Rename html_url to htmlUrl as needed by Jackson

Co-authored-by: Liam Newman <13e672715c8d42f4200f35d2b309f553303d2bab@gmail.com>
kohsuke/github-api