docs(parts): add wasmtime-py link

Author: thewtex

docs/introduction/parts.md

@@ -68,7 +68,7 @@ The `itkwasm` Python package provides:
 2. A bridge to NumPy and ITK
 3. A plugin system for accelerator packages
 
-Both system execution and browser execution are supported, with the latter enabled by [Pyodide](https://pyodide.org).
+Both system execution and browser execution are supported, with the former enabled by [wasmtime-py](https://github.com/bytecodealliance/wasmtime-py) and latter enabled by [Pyodide](https://pyodide.org).
 
 (cxx-core)=
 ## 🧑‍💻 C++ core
@@ -122,4 +122,4 @@ These images include not only the CMake pre-configured toolchains, but pre-built
 [`itkwasm/wasi`]: https://hub.docker.com/r/itkwasm/wasi
 [Web3]: https://en.wikipedia.org/wiki/Web3
 [dockcross]: https://github.com/dockcross/dockcross
-[CMake]: https://cmake.org
+[CMake]: https://cmake.org