#1450 docs: fix typos in READMEs, examples and blog posts

PR Checklist

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• The commit message follows our guidelines: https://voltagent.dev/docs/community/contributing/#commit-convention

Bugs / Features

• Related issue(s) linked
• Tests for the changes have been added
• Docs have been added / updated
• Changesets have been added https://voltagent.dev/docs/community/contributing/#creating-a-changeset

What is the current behavior?

A handful of typos in the READMEs, an example, two recipe pages and two blog posts:

• examples/with-a2a-server/README.md says the A2AServer exposes "message/taks endpoints".
• README.md, i18n/README-jp.md and i18n/README-kr.md have alt="dashboar" on the VoltOps screenshot. The two Chinese READMEs already use alt="dashboard".
• website/recipes/whatsapp-order.md and website/examples/whatsapp-order.md link to the "VoltOps LLM Observability platfrom".
• website/blog/2025-05-01-voltagent-marketplace/index.md has "Accesible Solutions".
• website/blog/2025-07-20-llm-evaluation/index.md has "programatically".

What is the new behavior?

Each of the above is corrected: "message/task endpoints", alt="dashboard", "platform", "Accessible", "programmatically".

Notes for reviewers

Markdown only, one line per file. No changeset added since no package is affected.

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Summary by cubic

Fixes typos across READMEs, examples, recipes, and blog posts without affecting any code.

• Corrects "message/taks" to "message/task" in the a2a-server example README.
• Fixes image alt text "dashboar" to "dashboard" in README.md, i18n/README-jp.md, and i18n/README-kr.md.
• Corrects "platfrom" to "platform" in the WhatsApp order recipe and example.
• Fixes "Accesible" to "Accessible" and "programatically" to "programmatically" in two blog posts.

Summary by CodeRabbit

• Documentation
  • Corrected spelling and typos across dashboard image descriptions, server documentation, blog posts, and WhatsApp setup guides.