Update LICENSE.md

Co-Authored-By: fkjagodzinski <[email protected]>

Author: Cruz Monrreal

LICENSE.md

@@ -44,7 +44,7 @@ The Python modules used by Mbed tools are used under the following licenses:
 - [mbed-host-tests](https://pypi.org/project/mbed-host-tests) - Apache-2.0
 - [mbed-greentea](https://pypi.org/project/mbed-greentea) - Apache-2.0
 - [beautifulsoup4](https://pypi.org/project/beautifulsoup4) - MIT
-- [pyelftools](https://pypi.org/project/pyelftools) - **TODO**, *public domain ?*
+- [pyelftools](https://pypi.org/project/pyelftools) - Public Domain
 - [manifest-tool](https://pypi.org/project/manifest-tool) - Apache-2.0
 - [icetea](https://pypi.org/project/icetea) - Apache-2.0
 - [pycryptodome](https://pypi.org/project/pycryptodome) - BSD-2-Clause