Clarify Windows build preferences in README.md.

README.md

@@ -548,13 +548,13 @@ The primary installation method, as described at
 [www.rustup.rs](https://www.rustup.rs), differs by platform:
 
 * On Windows, download and run the [rustup-init.exe built for
-  `i686-pc-windows-gnu` target][setup]. Despite being built against the GNU
-  toolchain, _the Windows build of rustup will install Rust for the MSVC
-  toolchain if it detects that MSVC is installed_. If you prefer to install GNU
-  toolchains or x86_64 toolchains by default this can be modified at install
-  time, either interactively or with the `--default-host` flag, or after
-  installation via `rustup set default-host`. In general, this is the build
-  of rustup one should install on Windows.
+  `i686-pc-windows-gnu` target][setup]. In general, this is the build of rustup
+  one should install on Windows. Despite being built against the GNU toolchain,
+  _the Windows build of rustup will install Rust for the MSVC toolchain if it
+  detects that MSVC is installed_. If you prefer to install GNU toolchains or
+  x86_64 toolchains by default this can be modified at install time, either
+  interactively or with the `--default-host` flag, or after installation via
+  `rustup set default-host`.
 * On Unix, run `curl https://sh.rustup.rs -sSf | sh` in your
   shell. This downloads and runs [`rustup-init.sh`], which in turn
   downloads and runs the correct version of the `rustup-init`