Fix spelling of environment

manualtesting/test_autolink.go

@@ -19,7 +19,7 @@ http://www.google.com.pk/url?sa=t&rct=j&q=&esrc=s&source=web&cd=4&cad=rja&uact=8
 https://medium.com/@slackhq/11-useful-tips-for-getting-the-most-of-slack-5dfb3d1af77
 `
 
-func testAutoLink(env TestEnviroment) *model.AppError {
+func testAutoLink(env TestEnvironment) *model.AppError {
 	l4g.Info("Manual Auto Link Test")
 	channelID, err := getChannelID(model.DEFAULT_CHANNEL, env.CreatedTeamId, env.CreatedUserId)
 	if err != true {