message: Removed ilnk to master reference doc
diff: @@ -76,9 +76,7 @@ Tantivy works on stable rust (>= 1.27) and supports Linux, MacOS and Windows.
  `tantivy-cli` is an actual command line interface that makes it easy for you to create a search engine,
  index documents and search via the CLI or a small server with a REST API.
  It will walk you through getting a wikipedia search engine up and running in a few minutes.
  -- [reference doc]
  - - [For the last released version](https://docs.rs/tantivy/)
  - - [For the last master branch](https://tantivy-search.github.io/tantivy/tantivy/index.html)
  +- [reference doc for the last released version](https://docs.rs/tantivy/)
  # How can I support this project?
  