hugo: fix navbar icons

I don't understand why this change fixes the issue, but it does. Analysis TBA?

Author: jo3-l

config/_default/params.toml

@@ -39,7 +39,7 @@ mainSections = ["docs"]
   alertDismissable = true # true (default) or false
 
   # Bootstrap
-  bootstrapJavascript = false # false (default) or true
+  bootstrapJavascript = true # false (default) or true
 
   # Nav
   sectionNav = ["docs", "learn"] # ["docs"] (default) or list of sections (e.g. ["docs", "guides"])