Fix download script in laion-high-resolution docs (#351)

* Fix download script in lain-high-resolution docs

The current script produces invalid urls due to the padding not being kept in the for loop

* Cleanup

dataset_examples/laion-high-resolution.md

@@ -11,8 +11,12 @@ A good use case is to train a superresolution model.
 Download from https://huggingface.co/datasets/laion/laion-high-resolution
 
 ```
-mkdir laion-high-resolution && cd laion-high-resolution
-for i in {00000..00127}; do wget https://huggingface.co/datasets/laion/laion-high-resolution/resolve/main/part-$i-5d6701c4-b238-4c0a-84e4-fe8e9daea963-c000.snappy.parquet; done
+mkdir -p laion-high-resolution && cd laion-high-resolution
+
+for i in {0..127}; do 
+    wget "https://huggingface.co/datasets/laion/laion-high-resolution/resolve/main/part-$(printf "%05d" $i)-5d6701c4-b238-4c0a-84e4-fe8e9daea963-c000.snappy.parquet"
+done
+
 cd ..
 ```