Updated/added model cards

[traviemcg]

Trained four models, adding/updating model cards to make consistent!

[codecov-io]

Codecov Report

Merging #3435 into master will increase coverage by 0.04%.
The diff coverage is 88.88%.

@@            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	Coverage Δ
src/transformers/data/processors/utils.py	24.68% <88.88%> (+2.94%)	⬆️
src/transformers/modeling_utils.py	91.85% <0.00%> (+0.13%)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 83272a3...d486459. Read the comment docs.