Fixes batch 2

docs/content/Deploying/DocsGPT-Settings.mdx

@@ -216,7 +216,7 @@ for the engines and flows.
 | `MARKUP_MAX_BYTES` | `8000000` | anydoc engine: HTML/XHTML larger than this are head-truncated before the `markdownify` parser runs (its tree costs ~50x the input). `0` disables the gate. |
 | `PDF_TRUST_CHECK` | `true` | Trust-check anydoc's PDF output for the two silent-loss classes (Type0 fonts without ToUnicode, CJK-declaring PDFs with CJK-less text). Flagged files re-parse on Docling when installed, else carry `parse_warnings` metadata. |
 | `ANYDOC_TABLEIZE` | `false` | Rewrite dot-leader / whitespace-aligned table runs in anydoc's PDF markdown into GFM tables. |
-| `OCR_ENGINE` | `tesseract` | OCR engine when OCR is on: `tesseract` (recommended, both backends), `deepseek` (VLM endpoint, both backends), or the Docling-only `auto`, `ocrmac`, `rapidocr`. Unavailable engines degrade with a warning. See the [OCR guide](/Guides/ocr). |
+| `OCR_ENGINE` | `tesseract` | OCR engine when OCR is on: `tesseract` (recommended, both backends; optional system package — build with `INSTALL_TESSERACT=true` or `apt`/`brew` install it), `deepseek` (VLM endpoint, both backends), or the Docling-only `auto`, `ocrmac`, `rapidocr`. Unavailable engines degrade with a warning. See the [OCR guide](/Guides/ocr). |
 | `OCR_LANGS` | `eng` | Tesseract language packs, `+`-separated (e.g. `eng+chi_sim+deu`). |
 | `OCR_DEEPSEEK_URL` | `http://localhost:11434/v1/chat/completions` | OpenAI-compatible endpoint for `OCR_ENGINE=deepseek` (Ollama or vLLM). |
 | `OCR_DEEPSEEK_MODEL` | `deepseek-ocr:3b` | Model name at that endpoint. |