fix(docs): batch typo corrections across documentation

[abdelhadi703]

Description

Batch correction of documentation typos that have been identified in multiple stagnant PRs. This PR consolidates the still-relevant fixes into a single clean commit.

Corrections included

Model picking guide (getting-started/models/picking)

• "simpe" -> "simple" and "builk" -> "bulk" (originally from fix: typos in models documentation #78 by @CharlesCNorton)
• "transformaion" -> "transformation" (originally from fix typo in picking.md #291 by @SilverBzH)
• "priortize" -> "prioritize" (originally from fix: typos in models documentation #78 by @CharlesCNorton)

Models overview page (getting-started/models/overview)

• "lastest" -> "latest" (originally from Fix typos in models overview page #206 by @lofcz)

Contribution guide (_guides/contribute/overview)

• Grammar fix: changed bare infinitives to gerund form in bullet list ("fix a typo" -> "fixing a typo", etc.) to match the introductory phrase "You can easily help by:" (originally from fix: improve contribution instructions #86 by @CharlesCNorton)

RAG quickstart guide (capabilities/embeddings/rag_quickstart)

• "an RAG" -> "a RAG" (originally from fix: typos in basic_RAG guide #85 by @CharlesCNorton)
• "vector database to choose" -> "vector databases to choose" (plural agreement) (originally from fix: typos in basic_RAG guide #85 by @CharlesCNorton)
• "individual text chunk as it is" -> "an individual text chunk as is" (originally from fix: typos in basic_RAG guide #85 by @CharlesCNorton)

Corrections NOT included (already fixed or no longer applicable)

• Fix: two typos - "critque" -> "critique" #84 (@CharlesCNorton): "critque" -> "critique" in finetuning dataset preparation — already corrected in the current codebase
• fix(typo): typo in responseFormat for NodeJs #125 (@cocosmos): response_format -> responseFormat for Node.js — already using correct responseFormat in the TypeScript example
• fix: typos in models documentation #78 partial: the original file docs/getting-started/models.mdx no longer exists; the typos that migrated to picking/_page.mdx are fixed above
• Fix typos in models overview page #206 partial: "powerfull" -> "powerful" and second "lastest" fix — the Mistral Saba and Mistral Small rows containing those typos no longer exist in the current overview table

Related PRs

References: #84, #78, #85, #86, #125, #206, #291

Note

These corrections were originally proposed in individual PRs that have been open for months. This PR consolidates the still-relevant fixes into a single clean commit. Credit to the original contributors: @CharlesCNorton, @cocosmos, @lofcz, @SilverBzH.

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[abdelhadi703]

Hi @mistralai/team,

Following up on these typo corrections across the documentation. Improves readability and accuracy.

Happy to review with fresh eyes if needed. Thanks!