Update README.md

Belarusian audio corpus.

3 different sets under the hood.
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dataset_1 - Людзі на балоце
Corresponded text https://knihi.com/Ivan_Mielez/Ludzi_na_balocie.html

Total duration: 13:42:04

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dataset_2 - Donar.by

Total duration: 37h 5m 34s


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dataset-3 - Knihi.by


Sources (with kind permission by): PRASTORA.BY (https://prastora.by)

Total durations: 36:50:54

README.md

@@ -29,4 +29,14 @@ configs:
     path: data/train-*
   - split: test
     path: data/test-*
+license: apache-2.0
+language:
+- be
+tags:
+- belarusian
+- audio
+- tts
+pretty_name: Belarusian audio corpus
+size_categories:
+- 10K<n<100K
 ---