Switch more posts to work with KaTeX and the latex macro

content/blog/10_compiler_polymorphism.md

@@ -36,12 +36,13 @@ if (if True False True) 11 3
 This is because, for this to work, both of the following would need to hold (borrowing
 some of our notation from the [typechecking]({{< relref "03_compiler_typechecking.md" >}}) post):
 
-$$
-\\text{if} : \\text{Int} \\rightarrow \\text{Int}
-$$
-$$
-\\text{if} : \\text{Bool} \\rightarrow \\text{Bool}
-$$
+{{< latex >}}
+\text{if} : \text{Int} \rightarrow \text{Int}
+{{< /latex >}}
+
+{{< latex >}}
+\text{if} : \text{Bool} \rightarrow \text{Bool}
+{{< /latex >}}
 
 But using our rules so far, such a thing is impossible, since there is no way for
 \\(\text{Int}\\) to be unified with \\(\text{Bool}\\). We need a more powerful