Update env-configuration.mdx

docs/getting-started/env-configuration.mdx

@@ -2138,6 +2138,7 @@ Note: this configuration assumes that AWS credentials will be available to your
   - `docling` - Use Docling engine
   - `document_intelligence` - Use Document Intelligence engine
   - `mistral_ocr` - Use Mistral OCR engine
+  - `mineru`
 - Description: Sets the content extraction engine to use for document ingestion.
 - Persistence: This environment variable is a `PersistentConfig` variable.
 
@@ -2270,6 +2271,13 @@ DOCLING_PARAMS="{\"do_ocr\": true, \"ocr_engine\": \"tesseract\", \"ocr_lang\":
 
 :::
 
+#### `MINERU_API_TIMEOUT`
+
+- Type: `str`
+- Default: `300`
+- Description: Sets the timeout in seconds for MinerU API requests during document processing.
+- Persistence: This environment variable is a `PersistentConfig` variable.
+
 ## Retrieval Augmented Generation (RAG)
 
 ### Core Configuration