Add extra note to restart shell

Author: camspec

docs/src/content/docs/builds/build-gs.mdx

@@ -25,6 +25,8 @@ The `cmake --build .` takes some time to run since it is using a single thread t
 ## Setting up frontend development
 To run the frontend, Node.js must be installed. If it isn't, see [Initial setup](/OBC-firmware/start-here/initial-setup/) and follow it to set up the database as well.
 
+Restart your shell or run `source ~/.bashrc` (only works on Bash).
+
 ### Running the ARO frontend
 While in the root directory, run the following commands to start the ARO frontend:
 ```shell