docs: add missing packages

Author: bennypowers

docs/_assets/variables.css

@@ -1,7 +1,7 @@
 html {
-  --primary-color: #e63946;
-  --primary-color-lighter: #e25761;
-  --primary-color-darker: #a22831;
+  --primary-color: #725750;
+  --primary-color-lighter: #4f342c;
+  --primary-color-darker: #47231a;
   --primary-color-accent: #cee5f6;
   --primary-text-color: #2c3e50;
   --primary-lines-color: #ccc;