Add parquet file description

README.md

@@ -37,9 +37,16 @@ The sentences included in the dataset are in Catalan (CA) and German (DE).
 
 ### Data Instances
 
-A single tsv file is provided with the sentences sorted in the same order and 
-a header containing the two-letter ISO language code for the language in each column: 
-ca-de_all_2023_09_11.tsv.
+Two separate txt files are provided with the sentences sorted in the same order:
+
+- ca-de_all_2023_09_11.ca
+
+- ca-de_all_2023_09_11.de
+
+The dataset is additionally provided in parquet format: ca-de_all_2023_09_11.parquet.
+
+The parquet file contains two columns of parallel text obtained from the two original text files. 
+Each row in the file represents a pair of parallel sentences in the two languages of the dataset.
 
 
 ### Data Fields
@@ -61,7 +68,7 @@ This dataset is aimed at promoting the development of Machine Translation betwee
 #### Initial Data Collection and Normalization
 
 The first portion of the corpus is a combination of the following original datasets collected from [Opus](https://opus.nlpl.eu/): 
-Multi CCAligned, WikiMatrix, GNOME, KDE4, OpenSubtitles, GlobalVoices, Tatoeba.
+MultiCCAligned, WikiMatrix, GNOME, KDE4, OpenSubtitles, GlobalVoices, Tatoeba.
 
 Additionally, the corpus contains synthetic parallel data generated from the original Spanish-Catalan Europarl and Tilde corpora 
 made public by [SoftCatalà](https://github.com/Softcatala/Europarl-catalan).