message: Document disabling extra alignment on windows
diff: @@ -33,6 +33,9 @@ or newer. The MongoDB C Driver supports TLS 1.1 on Linux if OpenSSL is
  at least version 1.0.1. On macOS and Windows, the C Driver uses native
  TLS implementations that support TLS 1.1.
  +If you are compiling on Windows, you should disable extra alignment with
  +`-DENABLE_EXTRA_ALIGNMENT=0` when configuring the C driver.
  +
  ### Step 2: Choose a C++17 polyfill
  The mongocxx driver uses the C++17 features `std::optional` and
  