docs: fix COFE limit axiom

docs/algebra.tex

@@ -15,7 +15,7 @@ This definition varies slightly from the original one in~\cite{catlogic}.
     \All n. (\nequiv{n}) ~& \text{is an equivalence relation} \tagH{cofe-equiv} \\
     \All n, m.& n \geq m \Ra (\nequiv{n}) \subseteq (\nequiv{m}) \tagH{cofe-mono} \\
     \All x, y.& x = y \Lra (\All n. x \nequiv{n} y) \tagH{cofe-limit} \\
-    \All n, c.& \lim(c) \nequiv{n} c(n+1) \tagH{cofe-compl}
+    \All n, c.& \lim(c) \nequiv{n} c(n) \tagH{cofe-compl}
   \end{align*}
 \end{defn}