Use absolute URL for logo in README to fix PyPI rendering

[Copilot]

PyPI does not resolve relative image paths in README files, causing the TM1py logo to appear broken on the package page.

Changes

• Updated README.md logo reference from relative path to absolute GitHub raw URL
  • Before: Images/Logo.svg
  • After: https://raw.githubusercontent.com/cubewise-code/tm1py/master/Images/Logo.svg

This ensures the logo renders correctly on PyPI while maintaining GitHub compatibility.

Original prompt

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This section details on the original issue you should resolve

<issue_title>TM1py logo does not render on PyPI</issue_title>
<issue_description>The TM1py project page on PyPI (https://pypi.org/project/TM1py/) currently displays a broken image where the project logo should be located. This happens because the README uses a relative image path, which PyPI does not support.

To fix this, TM1py should reference the logo using an absolute URL (e.g., the raw GitHub file link) so the image can be correctly displayed on PyPI.</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes TM1py logo does not render on PyPI #1347

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