Fix text in formula

jakobkogler · jakobkogler · commit 9e76f1e6ef3d · 2018-08-17T20:21:26.000+02:00
diff --git a/src/algebra/euclid-algorithm.md b/src/algebra/euclid-algorithm.md
@@ -18,7 +18,7 @@ The algorithm was first described in Euclid's "Elements" (circa 300 BC), but it
 
 The algorithm is extremely simple:
 
-$$gcd(a, b) = \begin{cases}a,&if $b = 0$\cr gcd(b, a\mod b),&otherwise\end{cases}$$
+$$gcd(a, b) = \begin{cases}a,&\text{if }b = 0 \\\\ gcd(b, a\mod b),&\text{otherwise}\end{cases}$$
 
 ## Implementation
 
