Update docs/hello_nextflow/09_hello_nf-core.md

Co-authored-by: Christopher Hakkaart <[email protected]>

docs/hello_nextflow/09_hello_nf-core.md

@@ -63,7 +63,7 @@ However nf-core is the largest open curated collection of Nextflow pipelines.
 
 !!!tip
 
-    One detail that sometimes trips people up is that the pipelines you pull this way are stored in a hidden assets folder. By default this is at `$HOME/.nextflow/assets`, but in this training environment you can check `$NXF_HOME/assets`:
+    Pulled pipelines are stored in a hidden assets folder. By default, this folder is `$HOME/.nextflow/assets`, but in this training environment the folder has been set to `$NXF_HOME/assets`:
 
     ```bash
     tree $NXF_HOME/assets/ -L 2