Commit 4cae6a724e6d684eb157dd6d7328755694f228b2 introduced the message,
but it printed the wrong path, e.g. for `brew link sqlite`:
```
If you need to have this software first in your PATH instead consider running:
echo 'export PATH="/usr/local/opt/sqlite:$PATH"' >> ~/.zshrc/bin
```
where `/bin` is appended at the end, but should be inserted before
`:$PATH`: `echo 'export PATH="/usr/local/opt/sqlite/bin:$PATH"' >> ~/.zshrc`.
This patch fixes that and updates a test to verify it.
