fix(docgen): inline esupports.metagen template function definitions (…

…#945)

lua/neorg/modules/core/esupports/metagen/module.lua

@@ -41,40 +41,40 @@ module.config.public = {
         -- The title field generates a title for the file based on the filename.
         {
             "title",
-            function()
-                return vim.fn.expand("%:p:t:r")
-            end,
+            function() return vim.fn.expand("%:p:t:r") end,
         },
 
         -- The description field is always kept empty for the user to fill in.
         { "description", "" },
 
         -- The authors field is autopopulated by querying the current user's system username.
-        { "authors", require("neorg.external.helpers").get_username },
+        { 
+            "authors",
+            function() return require("neorg.external.helpers").get_username() end,
+        },
 
         -- The categories field is always kept empty for the user to fill in.
         { "categories", "" },
 
         -- The created field is populated with the current date as returned by `os.date`.
         {
             "created",
-            function()
-                return os.date("%Y-%m-%d")
-            end,
+            function() return os.date("%Y-%m-%d") end,
         },
 
         -- When creating fresh, new metadata, the updated field is populated the same way
         -- as the `created` date.
         {
             "updated",
-            function()
-                return os.date("%Y-%m-%d")
-            end,
+            function() return os.date("%Y-%m-%d") end,
         },
 
         -- The version field determines which Norg version was used when
         -- the file was created.
-        { "version", require("neorg.config").norg_version },
+        {
+            "version",
+            function() return require("neorg.config").norg_version end
+        },
     },
 }