Remove reference to non-existent docs in CONTRIBUTING.md

[cgruver]

CONTRIBUTING.md has a reference to ramalama.io which does not exist yet.

This PR #743

Summary by Sourcery

Documentation:

• Remove the outdated link to the installation documentation from the contributing guide.

[sourcery-ai]

Reviewer's Guide by Sourcery

This PR removes outdated references from CONTRIBUTING.md by deleting the link and related installation instructions to a non-existent documentation site (ramalama.io). The changes focus specifically on cleaning the documentation to prevent confusion for contributors.

No diagrams generated as the changes look simple and do not need a visual representation.

File-Level Changes

Change	Details	Files
Removed outdated documentation references from CONTRIBUTING.md	Deleted the link and description pointing to the installation documentation on ramalama.io Removed bullet points that were instructing users to follow steps from the non-existent document	CONTRIBUTING.md

Possibly linked issues

• #0: The PR removes the bad link mentioned in the issue.

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[sourcery-ai]

Hey @cgruver - I've reviewed your changes and they look great!

Here's what I looked at during the review

• 🟡 General issues: 1 issue found
• 🟢 Security: all looks good
• 🟢 Testing: all looks good
• 🟢 Complexity: all looks good
• 🟢 Documentation: all looks good

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[sourcery-ai]

issue (typo): Typo: "PYTHON" should be "Python"

Suggested change

	The minimum version of Python required to use RamaLama is PYTHON 3.12
	The minimum version of Python required to use RamaLama is Python 3.12

[rhatdan]

LGTM