added layer attention documentation

Author: atroiano

R/layer-attention.R

@@ -4,6 +4,7 @@
 #' Dot-product attention layer, a.k.a. Luong-style attention.
 #' 
 #' @inheritParams layer_dense
+#' 
 #' @param inputs a list of inputs first should be the query tensor, the second the value tensor
 #' @param use_scale If True, will create a scalar variable to scale the attention scores.
 #' @param causal Boolean. Set to True for decoder self-attention. Adds a mask such that position i cannot attend to positions j > i.