fix: results labeling

[vladisl0th]

No description provided.

[Don-Yin]

good idea to use the benchmark series name instead of hardcoding "SPX". however, line 272 has a diff artifact left in the code:

      272 +     axes[5].plot(common, b_rebased, label=bm_label, linewidth=1,

the 272 + is not valid Python and will cause a SyntaxError at runtime. please fix the indentation to match the surrounding lines:

                bm_label = benchmark.name if benchmark.name else "benchmark"
                axes[5].plot(common, b_rebased, label=bm_label, linewidth=1,

once that is fixed this is good to merge.

[Don-Yin]

looks good now, thanks vlad