Remove em dash

pointerbench-text/README.md

@@ -45,7 +45,7 @@ surfaces and five languages.
   punctuation, caret before/after/between, between words, line start/end,
   sentence boundary, paragraph start/end, blank line, chrome label, word bbox,
   char bbox, line bbox, paragraph bbox).
-- **Invoice fields** (70 examples): bounding boxes for real invoice anatomy —
+- **Invoice fields** (70 examples): bounding boxes for real invoice anatomy:
   invoice number, dates, sender/recipient blocks, line items and the full
   line-item table, subtotal, tax / VAT ID, total, IBAN/BIC, and bank details.
   These are dedicated invoice surfaces so the target is unambiguous.