Updated/added model cards
Trained four models, adding/updating model cards to make consistent!
# [Codecov](https://codecov.io/gh/huggingface/transformers/pull/3435?src=pr&el=h1) Report
> Merging [#3435](https://codecov.io/gh/huggingface/transformers/pull/3435?src=pr&el=desc) into [master](https://codecov.io/gh/huggingface/transformers/commit/ccbe839ee0b78a17e74dab218bfae7efe904ac3b&el=desc) will **increase** coverage by `0.04%`.
> The diff coverage is `88.88%`.

[![Impacted file tree graph](https://codecov.io/gh/huggingface/transformers/pull/3435/graphs/tree.svg?width=650&height=150&src=pr&token=9qOlN6Hb1c)](https://codecov.io/gh/huggingface/transformers/pull/3435?src=pr&el=tree)

```diff
@@            Coverage Diff             @@
##           master    #3435      +/-   ##
==========================================
+ Coverage   77.56%   77.60%   +0.04%     
==========================================
  Files         100      100              
  Lines       16970    16967       -3     
==========================================
+ Hits        13162    13167       +5     
+ Misses       3808     3800       -8     
```


| [Impacted Files](https://codecov.io/gh/huggingface/transformers/pull/3435?src=pr&el=tree) | Coverage Δ | |
|---|---|---|
| [src/transformers/data/processors/utils.py](https://codecov.io/gh/huggingface/transformers/pull/3435/diff?src=pr&el=tree#diff-c3JjL3RyYW5zZm9ybWVycy9kYXRhL3Byb2Nlc3NvcnMvdXRpbHMucHk=) | `24.68% <88.88%> (+2.94%)` | :arrow_up: |
| [src/transformers/modeling\_utils.py](https://codecov.io/gh/huggingface/transformers/pull/3435/diff?src=pr&el=tree#diff-c3JjL3RyYW5zZm9ybWVycy9tb2RlbGluZ191dGlscy5weQ==) | `91.85% <0.00%> (+0.13%)` | :arrow_up: |

------

[Continue to review full report at Codecov](https://codecov.io/gh/huggingface/transformers/pull/3435?src=pr&el=continue).
> **Legend** - [Click here to learn more](https://docs.codecov.io/docs/codecov-delta)
> `Δ = absolute <relative> (impact)`, `ø = not affected`, `? = missing data`
> Powered by [Codecov](https://codecov.io/gh/huggingface/transformers/pull/3435?src=pr&el=footer). Last update [83272a3...d486459](https://codecov.io/gh/huggingface/transformers/pull/3435?src=pr&el=lastupdated). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments).
