message: simplify brew install command in bazel docs
diff: @@ -45,17 +45,11 @@ On Fedora (maybe also other red hat distros), run the following:
  dnf install cmake libtool libstdc++
  ```
  -On OS X, you'll need to install several dependencies. This can be accomplished via Homebrew:
  +On OS X, you'll need to install several dependencies. This can be accomplished via [Homebrew](https://brew.sh/):
  ```
  -brew install coreutils # for realpath
  -brew install wget
  -brew install cmake
  -brew install libtool
  -brew install go
  -brew install bazel
  -brew install automake
  -brew install ninja
  +brew install coreutils wget cmake libtool go bazel automake ninja
  ```
  +_note_: `coreutils` is used for realpath
  Envoy compiles and passes tests with the version of clang installed by XCode 9.3.0:
  Apple LLVM version 9.1.0 (clang-902.0.30).
  