Fix typos (#326)

* fix: typo

* docs: wrong link

modules/default.nix

@@ -78,7 +78,7 @@ inputs: {
   builtStartPlugins = buildConfigPlugins vimOptions.startPlugins;
   builtOptPlugins = map (package: {
     plugin = package;
-    optional = false;
+    optional = true;
   }) (buildConfigPlugins vimOptions.optPlugins);
 
   # combine built start and optional plugins

modules/wrapper/build/options.nix

@@ -47,7 +47,7 @@ in {
         internally to add plugins to Neovim's runtime.
 
         To add additional plugins to your configuration, consider
-        using the [{option}`vim.extraPlugins`](#opt-vim.optPlugins)
+        using the [{option}`vim.extraPlugins`](#opt-vim.extraPlugins)
         option.
       '';
     };