base16: Change syntax for new changes in base16 repo (#226)

lua/telescope/_extensions/themes.lua

@@ -24,7 +24,7 @@ M.reload_theme = function(theme_name)
         print("Error: Cannot load base16 plugin!")
         return false
     end
-    base16(base16.themes[theme_name], true)
+    base16(base16.themes(theme_name), true)
 
     if
         not reload_plugin {

lua/theme.lua

@@ -4,7 +4,7 @@ vim.g.nvchad_theme = chad_theme
 local present, base16 = pcall(require, "base16")
 
 if present then
-    base16(base16.themes[chad_theme], true)
+    base16(base16.themes(chad_theme), true)
     require "highlights"
     return true
 else