docs(core.dirman): fix type errors related to events

`assert()`s are used as there is no reason for the code to fail given the context.

lua/neorg/modules/core/dirman/module.lua

@@ -181,11 +181,11 @@ module.public = {
 
         -- Broadcast the workspace_changed event with all the necessary information
         modules.broadcast_event(
-            modules.create_event(
+            assert(modules.create_event(
                 module,
                 "core.dirman.events.workspace_changed",
                 { old = current_ws, new = new_workspace }
-            )
+            ))
         )
 
         return true
@@ -204,7 +204,7 @@ module.public = {
         module.config.public.workspaces[workspace_name] = workspace_path
         -- Broadcast the workspace_added event with the newly added workspace as the content
         modules.broadcast_event(
-            modules.create_event(module, "core.dirman.events.workspace_added", { workspace_name, workspace_path })
+            assert(modules.create_event(module, "core.dirman.events.workspace_added", { workspace_name, workspace_path }))
         )
 
         -- Sync autocompletions so the user can see the new workspace
@@ -333,7 +333,7 @@ module.public = {
 
         local bufnr = module.public.get_file_bufnr(fname)
         modules.broadcast_event(
-            modules.create_event(module, "core.dirman.events.file_created", { buffer = bufnr, opts = opts })
+            assert(modules.create_event(module, "core.dirman.events.file_created", { buffer = bufnr, opts = opts }))
         )
 
         if not opts.no_open then