add new feature

Author: hutaobo

src/pyXenium/analysis/__init__.py

@@ -1,5 +1,5 @@
 from .protein_gene_correlation import protein_gene_correlation
-from .rna_protein_joint import ProteinModelResult, rna_protein_cluster_analysis
+from .rna_protein_cluster_analysis import ProteinModelResult, rna_protein_cluster_analysis
 from .scoring import write_model_scores
 from .plotting import *