DOC: Add demo change for CI check in IO user guide

sanchit122006 · sanchit122006 · commit fde6486859db · 2025-12-14T19:13:25.000+05:30
diff --git a/doc/source/user_guide/io.rst b/doc/source/user_guide/io.rst
@@ -6525,3 +6525,7 @@ The files ``test.pkl.compress``, ``test.parquet`` and ``test.feather`` took the
     24009288 Oct 10 06:43 test_fixed_compress.hdf
     24458940 Oct 10 06:44 test_table.hdf
     24458940 Oct 10 06:44 test_table_compress.hdf
+
+
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+.. demo change for CI check
