move enum comment to earlier occurrence

exercises/033_iferror.zig

@@ -40,6 +40,8 @@ pub fn main() void {
         } else |err| switch (err) {
             MyNumberError.TooBig => std.debug.print(">4. ", .{}),
             // Please add a match for TooSmall here and have it print: "<4. "
+
+            // No "else" needed! Why is that?
         }
     }
 

exercises/035_enums.zig

@@ -45,7 +45,6 @@ pub fn main() void {
             Ops.pow => {
                 current_value *= current_value;
             },
-            // No "else" needed! Why is that?
         }
 
         std.debug.print("{} ", .{current_value});