MM-22355 - Fix typos detected by goreportcad.com (#13842)

* Update webhook_test.go

* Update user_test.go

* Update filesstore_test.go

* Update plugin_requests.go

* Update syncables.go

* Update helper.go

* Update html_entities.go

* Update user.go

* Update team.go

* Update notification.go

* Update notification_test.go

* Update plugin_api_test.go

* Update post_metadata.go

* Update channel_test.go

* Update database.go

* Update channel.go

* Update user_store.go

* Update team_test.go

* revert andd

* Revert back to infintie

Co-authored-by: Jesús Espino <jespinog@gmail.com>
Co-authored-by: mattermod <mattermod@users.noreply.github.com>

app/notification.go

@@ -703,7 +703,7 @@ type PostNotification struct {
 }
 
 // Returns the name of the channel for this notification. For direct messages, this is the sender's name
-// preceeded by an at sign. For group messages, this is a comma-separated list of the members of the
+// preceded by an at sign. For group messages, this is a comma-separated list of the members of the
 // channel, with an option to exclude the recipient of the message from that list.
 func (n *PostNotification) GetChannelName(userNameFormat, excludeId string) string {
 	switch n.Channel.Type {