[infinispan-issues] [JBoss JIRA] (ISPN-9829) Docs: Add style guidelines and update contributing guide

Docs: Add style guidelines and update contributing guide -------------------------------------------------------- Key: ISPN-9829 URL: https://issues.jboss.org/browse/ISPN-9829 Project: Infinispan Issue Type: Enhancement Components: Documentation-Core Reporter: Don Naro Assignee: Don Naro Priority: Major Fix For: 10.0.0.Beta1 Add style guide to the documentation directory. Update the styles in the Contributor's Guide. Style Guide should follow: https://redhat-documentation.github.io/ Also add styles based on IBM Style Guide (which is the RH standard).