Update README.md

Author: giordano

exercises/multithreading/README.md

@@ -1,6 +1,6 @@
 ## Requirements
 
-Only needed if you're running this not on NERSC or GCP:
+To create the Jupyter multi-threaded kernel (only needed if you're running this not on NERSC or GCP):
 
 ```
 julia --project=. -e 'using Pkg; Pkg.instantiate(); using IJulia; IJulia.installkernel("Multithreaded Julia", "--project=@.", "--threads=auto")'