message: Windows dev-env doc updates
diff: @@ -108,7 +108,9 @@ for how to update or override dependencies.
  `Git` is required. The version installable via MSYS2 is sufficient.
  Install the Windows-native [python3](https://www.python.org/downloads/), the POSIX flavor
  - available via MSYS2 will not work.
  + available via MSYS2 will not work. You need to add a symlink for `python3.exe` pointing to
  + the installed `python.exe` for Bazel rules which follow POSIX conventions. Be sure to add
  + `pip.exe` to the PATH and install the `wheel` package.
  For building with MSVC (the `msvc-cl` config option), you must install at least the VC++
  workload from the
  @@ -126,7 +128,11 @@ for how to update or override dependencies.
  In addition, because of the behavior of the `rules_foreign_cc` component of Bazel, set the
  `TMPDIR` environment variable to a path usable as a temporary directory (e.g.
  `C:\Windows\TEMP`). This variable is used frequently by `mktemp` from MSYS2 in the Envoy Bazel
  - build and can cause problems if not set to a value outside the MSYS2 filesystem.
  + build and can cause problems if not set to a value outside the MSYS2 filesystem. Note that
  + using the `ci/windows_ci_steps.sh` script (to build and run tests) will create a directory
  + symlink linking `C:\c` to `C:\` in order to enable build scripts run via MSYS2 to access
  + dependencies in the temporary directory specified above. If you are not using that script, you
  + will need to create that symlink manually.
  1. Install Golang on your machine. This is required as part of building [BoringSSL](https://boringssl.googlesource.com/boringssl/+/HEAD/BUILDING.md)
  and also for [Buildifer](https://github.com/bazelbuild/buildtools) which is used for formatting bazel BUILD files.
  