[Workers] SEO: Add environmental variables

[ToriLindsay]

Improve https://developers.cloudflare.com/workers/configuration/environment-variables/
SEO ranking for "add environmental variables"

[hyperlint-ai]

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PR Change Summary

Enhanced SEO for environmental variables documentation in Cloudflare Workers.

• Updated links to the environmental variables documentation across multiple pages.
• Improved SEO content related to adding environmental variables.
• Clarified the definition and usage of environmental variables in the context of Cloudflare Workers.

Modified Files

• src/content/docs/d1/get-started.mdx
• src/content/docs/d1/platform/limits.mdx
• src/content/docs/d1/sql-api/sql-statements.mdx
• src/content/docs/hyperdrive/configuration/local-development.mdx
• src/content/docs/kv/get-started.mdx
• src/content/docs/vectorize/get-started/embeddings.mdx
• src/content/docs/vectorize/get-started/intro.mdx
• src/content/docs/workers/configuration/environment-variables.mdx
• src/content/docs/workers/wrangler/configuration.mdx
• src/content/docs/workers/wrangler/migration/v1-to-v2/wrangler-legacy/commands.mdx

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[github-actions]

Preview URL: https://087ea3ac.preview.developers.cloudflare.com
Preview Branch URL: https://tori-pcx-seo-env-variables.preview.developers.cloudflare.com

Files with changes (up to 15)

Original Link	Updated Link
https://developers.cloudflare.com/hyperdrive/configuration/local-development/	https://tori-pcx-seo-env-variables.preview.developers.cloudflare.com/hyperdrive/configuration/local-development/
https://developers.cloudflare.com/workers/configuration/environment-variables/	https://tori-pcx-seo-env-variables.preview.developers.cloudflare.com/workers/configuration/environment-variables/
https://developers.cloudflare.com/d1/platform/limits/	https://tori-pcx-seo-env-variables.preview.developers.cloudflare.com/d1/platform/limits/
https://developers.cloudflare.com/d1/get-started/	https://tori-pcx-seo-env-variables.preview.developers.cloudflare.com/d1/get-started/
https://developers.cloudflare.com/d1/sql-api/sql-statements/	https://tori-pcx-seo-env-variables.preview.developers.cloudflare.com/d1/sql-api/sql-statements/
https://developers.cloudflare.com/kv/get-started/	https://tori-pcx-seo-env-variables.preview.developers.cloudflare.com/kv/get-started/
https://developers.cloudflare.com/vectorize/get-started/embeddings/	https://tori-pcx-seo-env-variables.preview.developers.cloudflare.com/vectorize/get-started/embeddings/
https://developers.cloudflare.com/vectorize/get-started/intro/	https://tori-pcx-seo-env-variables.preview.developers.cloudflare.com/vectorize/get-started/intro/
https://developers.cloudflare.com/workers/wrangler/configuration/	https://tori-pcx-seo-env-variables.preview.developers.cloudflare.com/workers/wrangler/configuration/
https://developers.cloudflare.com/workers/wrangler/migration/v1-to-v2/wrangler-legacy/commands/	https://tori-pcx-seo-env-variables.preview.developers.cloudflare.com/workers/wrangler/migration/v1-to-v2/wrangler-legacy/commands/