Add code comments

Author: Jack251970

Flow.Launcher.Core/Plugin/PluginManager.cs

@@ -264,7 +264,8 @@ public static async Task InitializePluginsAsync(List<PluginPair> allPlugins, IRe
                         API.LogDebug(ClassName, $"Disable plugin <{pair.Metadata.Name}> because init failed");
                     }
 
-                    // Even if the plugin cannot be initialized, we still need to add it in all plugin list
+                    // Even if the plugin cannot be initialized, we still need to add it in all plugin list so that
+                    // we can remove the plugin from Plugin or Store page or Plugin Manager plugin.
                     _allPlugins.TryAdd(pair.Metadata.ID, pair);
                     return;
                 }