[Metadata Composite Keys] Update set_primary_key docstring

sdv/metadata/metadata.py

@@ -432,7 +432,14 @@ def add_column_relationship(
         super().add_column_relationship(table_name, relationship_type, column_names)
 
     def set_primary_key(self, column_name, table_name=None):
-        """Set the primary key of a table."""
+        """Set the primary key of a table.
+
+        Args:
+            column_name (str, list[str]):
+                Name (or list of names) of the primary key column(s).
+            table_name (str):
+                Name of the table to set the primary key.
+        """
         table_name = self._handle_table_name(table_name)
         super().set_primary_key(table_name, column_name)
 

sdv/metadata/multi_table.py

@@ -689,8 +689,8 @@ def set_primary_key(self, table_name, column_name):
         Args:
             table_name (str):
                 Name of the table to set the primary key.
-            column_name (str, tulple[str]):
-                Name (or tuple of names) of the primary key column(s).
+            column_name (str, list[str]):
+                Name (or list of names) of the primary key column(s).
         """
         self._validate_table_exists(table_name)
         self.tables[table_name].set_primary_key(column_name)

sdv/metadata/single_table.py

@@ -855,8 +855,8 @@ def set_primary_key(self, column_name):
         """Set the metadata primary key.
 
         Args:
-            column_name (str):
-                Name of the primary key column(s).
+            column_name (str, list[str]):
+                Name (or list of names) of the primary key column(s).
         """
         if isinstance(column_name, list) and len(column_name) == 1:
             column_name = column_name[0]