fix: Change order to match 011_while.zig

exercises/009_if.zig

@@ -10,8 +10,8 @@
 // Zig has the "usual" comparison operators such as:
 //
 //     a == b   means "a equals b"
-//     a > b    means "a is greater than b"
 //     a < b    means "a is less than b"
+//     a > b    means "a is greater than b"
 //     a != b   means "a does not equal b"
 //
 // The important thing about Zig's "if" is that it *only* accepts