Update some style guide broken links

The remainder of the broken links I wasn't quite sure what the right
destination for them was (and for some of them, seems like they need to
be created in the first place).

Ref #318

style_guide.md

@@ -129,12 +129,12 @@ Gold is applied to action links and to contrast with the blue / background, depe
 
 ## Design Assets {#DesignAssets}
 
-All design materials are available on the [design folder](#) inside organization repository.
+All design materials are available on the [design folder](https://github.com/SeaGL/outreach/tree/main/design) inside organization repository.
 
 Specific materials and other quick reference files:
 
 - [Logo (png)](#)
-- [Logo (svg)](#)
+- [Logo (svg)](https://github.com/SeaGL/outreach/blob/main/design/logo/seagl_logo.svg)
 - [Logo with mic (png)](#)
 - [Logo with mic (svg)](#)
 - [Color Palette file](#)