Update Installation.md

[xyz2022]

Removing "or higher" because:
(i) ./ml-agents/setup.py requires >=3.10.1,<=3.10.12 (ii) python 3.10.13 is the default conda install, and 3.10.13 does not work correctly with numpy 1.21.2

Proposed change(s)

Remove the phrase "or higher" from "Install Python 3.10.12 or Higher"

Useful links (Github issues, JIRA tickets, ML-Agents forum threads etc.)

30fbd50

This is one issue related to the "or higher" clause on the python version:
#6002

Types of change(s)

• Bug fix
• New feature
• Code refactor
• Breaking change
• Documentation update
• Other (please describe)

Checklist

• Added tests that prove my fix is effective or that my feature works
• Updated the changelog (if applicable)
• Updated the documentation (if applicable)
• Updated the migration guide (if applicable)

Other comments

[CLAassistant]

All committers have signed the CLA.

[alex-mccarthy-unity]

Thanks for improving our docs! I'll merge this in.