Fixed DatabaseIntrospection.get_relations() docstring.

The foreign keys are "in" the given table, not "to" it.

django/db/backends/sqlite3/introspection.py

@@ -115,7 +115,7 @@ class DatabaseIntrospection(BaseDatabaseIntrospection):
     def get_relations(self, cursor, table_name):
         """
         Return a dictionary of {field_name: (field_name_other_table, other_table)}
-        representing all relationships to the given table.
+        representing all foreign keys in the given table.
         """
         # Dictionary of relations to return
         relations = {}