Optimize Lua complete

plugs/core/Library/Std/Lua.md

@@ -68,11 +68,13 @@ event.listen {
         failed = true
       end
     end
+    if failed then
+      return
+    end
     local last_prop = prop_parts[#prop_parts]
     if table.includes(LUA_KEYWORDS, last_prop) then
       return
     end
-    if not failed then
     local options = {}
     for key, val in pairs(current_value) do
       if string.startswith(key, last_prop) and val then
@@ -109,7 +111,6 @@ event.listen {
       }
     end
   end
-  end
 }
 ```
 
@@ -139,6 +140,7 @@ template.define_slash_command {
   template = template.new 'query[[from index.tag "|^|"]]'
 }
 
+
 -- A query embedded in ${}
 template.define_slash_command {
   name = "query",