Fix the which-key spec issue caused by recent cleanup (#1113)

The recent cleanup accidentally broke the leader key specs
because the spec block was in the wrong level of braces.
That resulted in which-key no longer showing the description
of the <leader> key chains such as [S]earch and others.

init.lua

@@ -310,6 +310,7 @@ require('lazy').setup({
           F11 = '<F11>',
           F12 = '<F12>',
         },
+      },
 
       -- Document existing key chains
       spec = {
@@ -323,7 +324,6 @@ require('lazy').setup({
       },
     },
   },
-  },
 
   -- NOTE: Plugins can specify dependencies.
   --