fix naming for GELU and add tlu maintainer (tensorflow#874)

tensorflow_addons/layers/README.md

@@ -3,24 +3,26 @@
 ## Maintainers
 | Submodule  |  Maintainers  | Contact Info   |
 |:---------- |:----------- |:------------- |
-| gelu       | @AakashKumarNain | aakashnain@outlook.com |  
+| gelu       | @AakashKumarNain | aakashnain@outlook.com |
 | maxout | @fsx950223 | fsx950223@gmail.com |
 | normalizations | @smokrow | moritz.kroeger@tu-dortmund.de |
 | opticalflow | @fsx950223 | fsx950223@gmail.com |
 | poincare | @rahulunair | rahulunair@gmail.com  |
 | sparsemax | @AndreasMadsen | amwwebdk+github@gmail.com |
+| tlu       | @AakashKumarNain | aakashnain@outlook.com |
 | wrappers | @seanpmorgan | seanmorgan@outlook.com |
 
 ## Components
 | Submodule  | Layer |  Reference  |
 |:---------- |:----------- |:------------- |
-| gelu   | GeLU   | https://arxiv.org/abs/1606.08415 | 
+| gelu   | GELU   | https://arxiv.org/abs/1606.08415 | 
 | maxout | Maxout | https://arxiv.org/abs/1302.4389    |
 | normalizations | GroupNormalization | https://arxiv.org/abs/1803.08494 |
 | normalizations | InstanceNormalization | https://arxiv.org/abs/1607.08022 |
 | opticalflow | CorrelationCost | https://arxiv.org/abs/1504.06852   |
 | poincare | PoincareNormalize | https://arxiv.org/abs/1705.08039    |
 | sparsemax| Sparsemax | https://arxiv.org/abs/1602.02068 |
+| tlu       | TLU | https://arxiv.org/abs/1911.09737  |
 | wrappers | WeightNormalization | https://arxiv.org/abs/1602.07868 |
 
 ## Contribution Guidelines