fix/accessibility link text learn

[Earnwithalee7890]

What changed? Why?
Improved accessibility by replacing generic link text (like "here", "click here") with descriptive anchor text in the learn directory documentation.
Descriptive links help screen reader users understand the context and destination of a link without needing to read the surrounding text, and improves SEO.

Notes to reviewers

• Updated files including foundry/foundry-setup.mdx and others in the learn section.
• Ensured that the new link text accurately describes the destination resource.

How has it been tested?

• Manual review of the markdown changes to ensure links render correctly and point to the intended URLs.
• Verified that the sentence structure remains grammatically correct with the new anchor text.

[cb-heimdall]

🟡 Heimdall Review Status

Requirement	Status	More Info
Reviews	🟡 0/2	Denominator calculation Show calculation 1 if user is bot 0 1 if user is external 0 2 if repo is sensitive 0 From .codeflow.yml 1 Additional review requirements Show calculation Max 0 0 From CODEOWNERS 0 Global minimum 0 Max 1 1 1 if commit is unverified 1 Sum 2