small fixes for Navis install instructions

docs/navis/navis_setup.md

@@ -23,9 +23,8 @@ In the long run, you might want to check out Option 2 but for this workshop you
 === "Full Install"
 
  The full install should set you up for using `Navis` plus a number of
- extra dependencies that are just nice to have. If
- you run into issues, try the minimal install
- instead.
+ extra dependencies that are just nice to have. If you run into issues,
+ try the [minimal install](navis_setup.md#__tabbed_1_2) instead.
 
  ``` sh
  pip install navis[all] -U
@@ -34,16 +33,25 @@ In the long run, you might want to check out Option 2 but for this workshop you
 
 === "Minimal"
 
- If you're running into issues with the full install, you can try
- the minimal install instead:
+ If you're running into issues with the [full install](navis_setup.md#__tabbed_1_1),
+ you can try this minimal install instead:
 
  ``` sh
  pip install navis -U
  ```
 
+ If you go down this route you will need to install the following packages manually:
+
+ ``` sh
+ pip install plotly pathos cloud-volume -U
+ ```
+
+ These aren't strictly required for `navis` but we will use them in this workshop.
+
+
 === "Dev"
 
- To install the latest version from Github:
+ You shouldn't need this for this workshop but to install the latest version from Github:
 
  ``` sh
  pip install git+https://github.com/navis-org/navis@master