Remove undercore from refl constructor to avoid KaTeX errors

content/blog/coq_dawn_eval.md

@@ -20,7 +20,7 @@ allows for the case in which the exact same expression is a value for two differ
 reasons. Although `IsValue` has only one constructor (`Val_quote`), it's actually
 {{< sidenote "right" "hott-note" "not provable" >}}
 Interestingly, it's also not provable that any two proofs of \(a = b\) are equal,
-even though equality only has one constructor, \(\text{eq_refl}\ :\ a \rightarrow (a = a) \).
+even though equality only has one constructor, \(\text{refl}\ :\ a \rightarrow (a = a) \).
 Under the <a href="https://homotopytypetheory.org/book/">homotopic interpretation</a>
 of type theory, this corresponds to the fact that two paths from \(a\) to \(b\) need
 not be homotopic (continuously deformable) to each other.<br>