Adapt CMakeLists for renamed modules

Author: Vandenplas, Jeremie

CMakeLists.txt

@@ -56,8 +56,8 @@ add_library(neural-fortran
   src/nf/nf_maxpool2d_layer.f90
   src/nf/nf_maxpool2d_layer_submodule.f90
   src/nf/nf_metrics.f90
-  src/nf/nf_multihead_attention.f90
-  src/nf/nf_multihead_attention_submodule.f90
+  src/nf/nf_multihead_attention_layer.f90
+  src/nf/nf_multihead_attention_layer_submodule.f90
   src/nf/nf_network.f90
   src/nf/nf_network_submodule.f90
   src/nf/nf_optimizers.f90