docs: add colon to default value if it is a symbol

Author: pjaap

src/dispatch.jl

@@ -413,7 +413,9 @@ end
 function _myprint(dict)
     lines_out = IOBuffer()
     for (k, v) in dict
-        println(lines_out, "  - `$(k)`: $(v[2]). Default: `$(v[1])`\n")
+        # add ":" to symbols
+        default_value = "`$(typeof(v[1]) == Symbol ? ":" : "")$(v[1])`"
+        println(lines_out, "  - `$(k)`: $(v[2]). Default: $(default_value)\n")
     end
     return String(take!(lines_out))
 end