Update README

README.md

@@ -28,7 +28,7 @@ Greek (with a small number of foreign-language items, mostly English, German, an
 This dataset consists of OCR-extracted text from the digital publications archive of the Archaeological Society at Athens (Η εν Αθήναις Αρχαιολογική Εταιρεία, [archetai.gr](https://www.archetai.gr/)). The Society, founded in 1837, is one of the oldest learned societies in Greece and the principal Greek institution conducting and publishing archaeological research. Its publications cover excavation reports, epigraphy, art history, monument conservation, and related historical and philological scholarship spanning from the mid-19th century to the present. Each record in the dataset corresponds to a single PDF volume, monograph, or issue from one of five publication series.
 
 **Metadata Info:** <br>
-This dataset consists of 814 records, structured as a flat tabular dataset with three string-typed columns. Unlike most of our other corpora, the dataset has no per-record `title` column: the underlying material is a set of journal issues and monograph volumes, identified at the source only by their series and PDF filename. This is documented as a known characteristic of the source rather than a missing field - see the QA conventions guide (`QA_GUIDE.md`, Section 2) for the rationale on not synthesising titles from filenames. Each row is uniquely identified by its `pdf_url`. The `collection` column carries one of five categorical labels that align one-to-one with the five subdirectories of the source archive (`bae`, `efimeris`, `praktika`, `mentor`, `ergon`).
+This dataset consists of 814 records, structured as a flat tabular dataset with three string-typed columns. Each row is uniquely identified by its `pdf_url`. The `collection` column carries one of five categorical labels that align one-to-one with the five subdirectories of the source archive (`bae`, `efimeris`, `praktika`, `mentor`, `ergon`).
 
 **Metadata Field Descriptions:**
 | Field | Type | Description |