Fix VertexMode;

api/init.lua

@@ -5809,6 +5809,7 @@ return {
         {
           name = "VertexMode",
           summary = "Different ways to draw mesh vertices.",
+          description = "TODO",
           key = "VertexMode",
           module = "lovr.graphics",
           values = {

api/lovr/graphics/VertexMode.lua

@@ -1,5 +1,6 @@
 return {
   summary = 'Different ways to draw mesh vertices.',
+  description = 'TODO',
   values = {
     {
       name = 'points',