Added missing comment guideline (#4889)

detox/e2e/test/autocomplete/edit_channel.e2e.js

@@ -1,6 +1,12 @@
 // Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
 // See LICENSE.txt for license information.
 
+// *******************************************************************
+// - [#] indicates a test step (e.g. # Go to a screen)
+// - [*] indicates an assertion (e.g. * Check the title)
+// - Use element testID when selecting an element. Create one if none.
+// *******************************************************************
+
 import {toChannelScreen} from '@support/ui/screen';
 
 import {Setup} from '@support/server_api';

detox/e2e/test/autocomplete/edit_post.e2e.js

@@ -1,6 +1,12 @@
 // Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
 // See LICENSE.txt for license information.
 
+// *******************************************************************
+// - [#] indicates a test step (e.g. # Go to a screen)
+// - [*] indicates an assertion (e.g. * Check the title)
+// - Use element testID when selecting an element. Create one if none.
+// *******************************************************************
+
 import {toChannelScreen} from '@support/ui/screen';
 
 import {Setup} from '@support/server_api';

detox/e2e/test/autocomplete/post_draft.e2e.js

@@ -1,6 +1,12 @@
 // Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
 // See LICENSE.txt for license information.
 
+// *******************************************************************
+// - [#] indicates a test step (e.g. # Go to a screen)
+// - [*] indicates an assertion (e.g. * Check the title)
+// - Use element testID when selecting an element. Create one if none.
+// *******************************************************************
+
 import {toChannelScreen} from '@support/ui/screen';
 
 import {Setup} from '@support/server_api';

detox/e2e/test/autocomplete/search.e2e.js

@@ -1,6 +1,12 @@
 // Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
 // See LICENSE.txt for license information.
 
+// *******************************************************************
+// - [#] indicates a test step (e.g. # Go to a screen)
+// - [*] indicates an assertion (e.g. * Check the title)
+// - Use element testID when selecting an element. Create one if none.
+// *******************************************************************
+
 import {toChannelScreen} from '@support/ui/screen';
 
 import {Setup} from '@support/server_api';

detox/e2e/test/smoke_test/channels.e2e.js

@@ -1,6 +1,12 @@
 // Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
 // See LICENSE.txt for license information.
 
+// *******************************************************************
+// - [#] indicates a test step (e.g. # Go to a screen)
+// - [*] indicates an assertion (e.g. * Check the title)
+// - Use element testID when selecting an element. Create one if none.
+// *******************************************************************
+
 import {toChannelScreen} from '@support/ui/screen';
 
 import {Setup, Channel} from '@support/server_api';

detox/e2e/test/smoke_test/login_ldap.e2e.js

@@ -1,6 +1,12 @@
 // Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
 // See LICENSE.txt for license information.
 
+// *******************************************************************
+// - [#] indicates a test step (e.g. # Go to a screen)
+// - [*] indicates an assertion (e.g. * Check the title)
+// - Use element testID when selecting an element. Create one if none.
+// *******************************************************************
+
 import {Ldap, Setup, System, Team, User} from '@support/server_api';
 import {serverUrl} from '@support/test_config';
 import ldapUsers from '@support/fixtures/ldap_users.json';