Fix language tags in dataset cards (#4826)

Commit from https://github.com/huggingface/datasets/commit/cfae8ac7c896772af537441508aaae2391aea53a

README.md

@@ -92,7 +92,6 @@ language:
 - so
 - sq
 - sr
-- srp
 - sv
 - sw
 - szl
@@ -203,7 +202,114 @@ machine learning task, language modeling and generation
 
 ### Languages
 
-Ted talks are mostly held in English (`en`). Almost all of the talks have been translated, by volunteers, into Arabic, Bulgarian, Chinese (simplified), French, Italian, Korean, Portuguese (Brazil) and Spanish. For about 70 other languages, the number of translated talks ranges from several hundreds (e.g. such as other Dutch, German, Hebrew, Romanian) to one (e.g. Hausa, Hupa, Bislama, Ingush, Maltese)
+Ted talks are mostly held in English (`en`). Almost all of the talks have been translated, by volunteers, into Arabic, Bulgarian, Chinese (simplified), French, Italian, Korean, Portuguese (Brazil) and Spanish. For about 70 other languages, the number of translated talks ranges from several hundreds (e.g. such as other Dutch, German, Hebrew, Romanian) to one (e.g. Hausa, Hupa, Bislama, Ingush, Maltese).
+
+The languages in the dataset are:
+- af
+- am
+- ar
+- arq
+- art
+- as
+- ast
+- az
+- be
+- bg
+- bi
+- bn
+- bo
+- bs
+- ca
+- ceb
+- cnh
+- cs
+- da
+- de
+- el
+- en
+- eo
+- es
+- et
+- eu
+- fa
+- fi
+- fil
+- fr
+- ga
+- gl
+- gu
+- ha
+- he
+- hi
+- hr
+- ht
+- hu
+- hup
+- hy
+- id
+- ig
+- inh
+- is
+- it
+- ja
+- ka
+- kk
+- km
+- kn
+- ko
+- ku
+- ky
+- la
+- lb
+- lo
+- lt
+- ltg
+- lv
+- mg
+- mk
+- ml
+- mn
+- mr
+- ms
+- mt
+- my
+- nb
+- ne
+- nl
+- nn
+- oc
+- pa
+- pl
+- ps
+- pt
+- ro
+- ru
+- rup
+- sh
+- si
+- sk
+- sl
+- so
+- sq
+- sr
+- srp: Serbian (`sr`)
+- sv
+- sw
+- szl
+- ta
+- te
+- tg
+- th
+- tl
+- tlh
+- tr
+- tt
+- ug
+- uk
+- ur
+- uz
+- vi
+- zh
 
 ## Dataset Structure