Clarify some elements of the README and wrap lines

coinlib/README.md

@@ -84,19 +84,22 @@ To build the dynamic library, run `dart run coinlib:build_macos` which will
 place the library under a `build` directory.
 
 ## Building for Windows
+
 ### Native Windows build
 
 The Windows shared library can be built using `dart run coinlib:build_windows` in
 the root directory of your package which will produce a shared library into
 `build/libsecp256k1.dll`.  This can also be run in the `coinlib` root directory
 via `dart run bin/build_windows.dart`.
 
-Windows builds use the Visual Studio 17 2022 generator.  Earlier Visual Studio toolchains may work by editing `bin/build_windows.dart`.
+Windows builds use the Visual Studio 17 2022 generator.  Earlier Visual Studio
+toolchains may work by editing `bin/build_windows.dart`.
 
 ### Cross-compiling for Windows from Linux
 
 Cross-compile a secp256k1 DLL for Windows on an Ubuntu 20.04 host with
-`dart run coinlib:build_windows_crosscompile` or `dart run bin/build_windows_crosscompile.dart`.
+`dart run coinlib:build_windows_crosscompile`. This can also be run in the
+`coinlib` root directory via `dart run bin/build_windows_crosscompile.dart`.
 
 ### Cross-compiling for Windows using WSL
 
@@ -117,12 +120,12 @@ apt-get update -y
 apt-get install -y autoconf libtool build-essential git cmake mingw-w64
 ```
 
-Then, cross-compile a secp256k1 DLL for Windows on an Ubuntu 20.04 WSL2
-instance on a Windows host with `dart run coinlib:build_wsl` or 
-`dart run bin/build_wsl.dart`, or complete the above 
-["Building for Windows on Linux"](#building-for-windows-on-linux) after 
-installing Docker or Podman in WSL.  The build can also be completed without 
-installing Flutter to WSL by following 
+Then, cross-compile a secp256k1 DLL for Windows on an Ubuntu 20.04 WSL2 instance
+on a Windows host with `dart run coinlib:build_wsl` or
+`dart run bin/build_wsl.dart` in the `coinlib` root directory, or complete the
+above ["Building for Windows on Linux"](#building-for-windows-on-linux) after
+installing Docker or Podman in WSL. The build can also be completed without
+installing Flutter to WSL by following
 [bitcoin-core/secp256k1's "Cross compiling" guide](https://github.com/bitcoin-core/secp256k1?tab=readme-ov-file#cross-compiling).
 
 ## Development