docs(dynamic values): link to scripts/ironvars pages

Also adds a little bit of clarification around script syntax.

docs/Dynamic values.md

@@ -1,7 +1,7 @@
 In some configuration locations, Ironbar supports dynamic values, 
 meaning you can inject content into the bar from an external source.
 
-Currently two dynamic content sources are supported - scripts and ironvars.
+Currently two dynamic content sources are supported - [scripts](scripts) (via shorthand syntax) and [ironvars](ironvars).
 
 ## Dynamic String
 
@@ -36,4 +36,4 @@ Example:
 ```toml
 show_if = "exit 0" # script
 show_if = "#show_module" # variable
-```
+```