Update foundations-mathematical.qmd

found an unlinked reference. I did not check to see if that section name actually existed, just added the @ ref code to hopefully make it link.

foundations-mathematical.qmd

@@ -1145,7 +1145,7 @@ Next, let's turn our attention to the medical consultant case study.
 ### Observed data
 
 In Section @sec-case-study-med-consult we learned about a medical consultant who reported that only 3 of their 62 clients who underwent a liver transplant had complications, which is less than the more common complication rate of 0.10.
-In that work, we did not model a null scenario, but we will discuss a simulation method for a one proportion null distribution in Section sec-one-prop-null-boot, such a distribution is provided in @fig-MedConsNullSim-w-normal.
+In that work, we did not model a null scenario, but we will discuss a simulation method for a one proportion null distribution in [Section -@sec-one-prop-null-boot], such a distribution is provided in @fig-MedConsNullSim-w-normal.
 We have added the best-fitting normal curve to the figure, which has a mean of 0.10.
 Borrowing a formula that we'll encounter in [Chapter -@sec-inference-one-prop], the standard error of this distribution was also computed: $SE = 0.038.$