Fix issue with formatting from std library updates

exercises/050_no_value.zig

@@ -71,7 +71,7 @@ pub fn main() void {
     var first_line2: Err!*const [21]u8 = ???;
     first_line2 = "which can eternal lie";
 
-    std.debug.print("{s} {s} / ", .{ first_line1, first_line2 });
+    std.debug.print("{s} {!s} / ", .{ first_line1, first_line2 });
 
     printSecondLine();
 }

exercises/082_anonymous_structs3.zig

@@ -116,7 +116,7 @@ fn printTuple(tuple: anytype) void {
         //         @field(foo, "x"); // returns the value at foo.x
         //
         // The first field should print as: "0"(bool):true
-        print("\"{s}\"({s}):{any} ", .{
+        print("\"{s}\"({any}):{any} ", .{
             field.???,
             field.???,
             ???,