dockerimg: fix typo in SSHTheater name
diff --git a/dockerimg/ssh_theater_test.go b/dockerimg/ssh_theater_test.go
index 3731018..5674d91 100644
--- a/dockerimg/ssh_theater_test.go
+++ b/dockerimg/ssh_theater_test.go
@@ -673,7 +673,7 @@
 	defer os.Setenv("HOME", oldHome)
 
 	// Create the theater
-	theater, err := NewSSHTheather("test-container", "localhost", "2222")
+	theater, err := NewSSHTheater("test-container", "localhost", "2222")
 	if err != nil {
 		t.Fatalf("Failed to create real SSHTheather: %v", err)
 	}