Clear Conclusion margin figure from header

Author: profvjreddi

book/quarto/contents/vol1/conclusion/conclusion.qmd

@@ -712,7 +712,7 @@ The idealized memory-transfer lower bound $T_{\text{mem}}$ is `{python} Conclusi
 
 ::: {.column-margin}
 ```{=latex}
-\vspace*{-23mm}
+\vspace*{-15mm}
 ```
 ![](images/svg/vol1_conclusion_margin_002.svg){width="100%" fig-alt="Idealized batch-one Llama decode point plotted to the left of the roofline ridge on an H100 chart."}