Fix heading 3

src/blog/posts/2024/5/learning-go-day-3.md

@@ -60,7 +60,7 @@ func Mod(a, b int) int {
 }
 ```
 
-## If-else-then
+## If-else-then
 
 The third trusty workhorseman of the Gopocalypse[^3]. Basic if-statements are pretty straightforward: