style: Reformat Lua with stylua

.luacheckrc

@@ -40,6 +40,6 @@ files["lib"] = {
    globals = {
       "lpeg",
       "pandoc",
-      "Reader"
-   }
+      "Reader",
+   },
 }

lua-libraries/lunamark.lua

@@ -85,10 +85,12 @@
 
 local G = {}
 
-setmetatable(G,{ __index = function(t,name)
-                             local mod = require("lunamark." .. name)
-                             rawset(t,name,mod)
-                             return t[name]
-                            end })
+setmetatable(G, {
+   __index = function (t, name)
+      local mod = require("lunamark." .. name)
+      rawset(t, name, mod)
+      return t[name]
+   end,
+})
 
 return G

pandoc-filters/unitalicize-blockquotes.lua

@@ -1,13 +1,13 @@
 local function unitalicize (element)
    element = pandoc.walk_block(element, {
-      Para = function(el)
+      Para = function (el)
          if #el.content == 1 then
             local inner = el.content[1]
             if inner.tag == "Emph" then
                return pandoc.Plain(inner.content)
             end
          end
-      end
+      end,
    })
    return element
 end