message: Add swift link
diff: @@ -40,7 +40,7 @@ Code generation and runtime libraries for many popular languages.
  1. PHP
  1. Python - [PyPi](https://pypi.org/project/flatbuffers/)
  1. Rust - [crates.io](https://crates.io/crates/flatbuffers)
  -1. Swift
  +1. Swift - [swiftpackageindex](https://swiftpackageindex.com/google/flatbuffers)
  1. TypeScript - [NPM](https://www.npmjs.com/package/flatbuffers)
  1. Nim
  