fix(docs): resolve ||site.*|| version tokens in imported _includes partials

[g-despot]

Problem

||site.java_client_version|| rendered as a literal token (instead of the version) on 5 pages — cloud/quickstart, weaviate/quickstart, cloud/embeddings/quickstart, weaviate/quickstart/local, weaviate/tutorials/quick-tour-of-weaviate. It was the only unresolved ||site.*|| token in the whole build.

Root cause

remark-replace (which interpolates ||site.*||) is registered only in the docs preset's remarkPlugins, which apply to files inside the docs plugin's content dirs. Partials imported from _includes/ are outside those dirs, so Docusaurus compiles them with its MDX fallback loader — which is not passed any remarkPlugins. As a result, remark-replace never ran on partials, and any ||site.*|| token in a partial (here, the Java Maven <version> in the quickstart install tabs) stayed literal. (The same token resolves on the Java client-library docs page only because that's a docs page, not a partial.)

Fix

Route the same interpolation through the global markdown.preprocessor hook, which runs on the raw content of every md/mdx file, including fallback-loaded partials:

• src/remark/remark-replace.js: extract the interpolation into a shared, exported replaceSiteTokens(value, sourcePath) (single source of truth; the remark plugin now delegates to it — behavior unchanged).
• docusaurus.config.js: add markdown.preprocessor that calls replaceSiteTokens on each file's content.

Raw-content replacement is a superset of the plugin's node-scoped replacement and is idempotent, so no previously-resolving token can stop resolving.

Verification

yarn build exits 0. All 5 target pages now render the resolved Java version; no ||site.*|| token leaks anywhere in the build; and previously-resolving tokens (weaviate_version, python_client_version, typescript_client_version, the Java docs page) still resolve with no regressions.

[orca-security-eu]

Orca Security Scan Summary

Status	Check	Issues by priority
Passed	Infrastructure as Code	0   0   0   0	View in Orca
Passed	SAST	0   0   0   0	View in Orca
Passed	Secrets	0   0   0   0	View in Orca
Passed	Vulnerabilities	0   0   0   0	View in Orca