moved description to docstring

Author: racinmat

docs/src/datasets/Mutagenesis.md

@@ -1,16 +1,5 @@
 # Mutagenesis
 
-The `Mutagenesis` dataset comprises 188 molecules trialed for mutagenicity on Salmonella typhimurium, available from
- [relational.fit.cvut.cz](https://relational.fit.cvut.cz/dataset/Mutagenesis) and
- [CTUAvastLab/datasets](https://github.com/CTUAvastLab/datasets/tree/main/mutagenesis). 
-
-Train, test and validation data can be loaded using:
-```julia
-train_x, train_y = Mutagenesis.traindata()
-test_x, test_y = Mutagenesis.testdata()
-val_x, val_y = Mutagenesis.valdata()
-```
-
 ```@docs
 Mutagenesis
 ```

src/Mutagenesis/Mutagenesis.jl

@@ -1,4 +1,22 @@
 export Mutagenesis
+
+"""
+Mutagenesis
+
+Website: https://relational.fit.cvut.cz/dataset/Mutagenesis
+License: CC0
+
+The `Mutagenesis` dataset comprises 188 molecules trialed for mutagenicity on Salmonella typhimurium, available from
+ [relational.fit.cvut.cz](https://relational.fit.cvut.cz/dataset/Mutagenesis) and
+ [CTUAvastLab/datasets](https://github.com/CTUAvastLab/datasets/tree/main/mutagenesis).
+
+Train, test and validation data can be loaded using:
+```julia
+train_x, train_y = Mutagenesis.traindata()
+test_x, test_y = Mutagenesis.testdata()
+val_x, val_y = Mutagenesis.valdata()
+```
+"""
 module Mutagenesis
 
 using DataDeps, JSON3