Numlock + Fan (#169)

* Add NumLock and Fan control

* fix: Match wording & capitalization with other lines

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Co-authored-by: Aaron Honeycutt <aaronhoneycutt@proton.me>
Co-authored-by: Jacob Kauffmann <jacobgkau@users.noreply.github.com>

Author: 3 people

src/models/galp4/external-overview.md

@@ -35,6 +35,8 @@ The Galago Pro has the following actions available using the Fn and Function key
 |![Fn-F11](./img/fn-f11.png)|Fn+F11  |Toggle airplane mode               |
 |![Fn-F12](./img/fn-f12.png)|Fn+F12  |Suspend                            |
 |![Fn-F12](./img/fn-dia.jpg)|Fn+`    |Play/Pause                         |
+|Ins                        |Fn+Ins  |Toggle numpad                      |  
+|1                          |Fn+1    |Toggle fan between max/automatic   |
 
 ## LED indicators