fix typo

Author: holgerroth

federated_learning/breast_density_challenge/README.md

@@ -36,7 +36,7 @@ Note, all code and pretrained models need to be included in the docker image.
 The virtual machines running the containers will not have public internet access during training.
 For an example, please see the `download_model.py` used to download ImageNet pretrained weights in this example.
 
-The Dockerfile be submitted using the [MedICI platform](https://www.medici-challenges.org).
+The Dockerfile will be submitted using the [MedICI platform](https://www.medici-challenges.org).
 For detailed instructions, see the [challenge website](http://BreastDensityFL.acr.org).
 
 ### 1.3 Run server and clients containers, and start training