Update README.md to include French

Source
Hugging Face: https://huggingface.co/languages

- Update ISO code
- Include tag set

README.md

@@ -2,9 +2,13 @@
 license: mit
 language:
 - nnd
+- fr
 task_categories:
 - translation
 size_categories:
 - 10K<n<100K
+tags:
+- machine-translation
+- parallel-corpus
 ---
 This <span style="color:teal;">parallel corpus </span> contains <span style="color:teal;">14,478</span> aligned sentence pairs <span style="color:teal;">Nande-French</span> in a <span style="color:teal;">90:10</span> split for the train and the test sets. It has been mainly used to fine-tune the <span style="color:teal;"> t5-base </span> pretrained model for the development of <a href="https://huggingface.co/SalomonMetre13/nnd_fr_mt" style="color:green;">this translation model </a>