Clarify that multiple programming languages are supported

[network-charles]

• I have read and followed the Contributing docs, especially the "First-time contributing?" section.
• This PR has content that I did not fully write myself.
  • I used AI and I have read and followed the Generative AI Contribution Policy.
• I have the experience and knowledge necessary to understand, review, and validate all content in this PR.¹

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• This PR clarifies that multiple programming languages are supported. Using only the word 'language' can be confused for languages used for human communication.
• Fixes [Docs] homepage feature image is misleading #9046

Footnotes

1. Yes, I can answer maintainer questions about the content of this PR, without using AI. ↩

[chalin]

HI. Strangely, I had to restart the build because it was failing. Anyhow, please undo the image name change, that isn't necessary for the fix you propose.

Anyhow, #9046 was referring to the image, not the feature title.