[TVMScript] Fix printing ForNode annotations (#8891)

Author: vinx13

src/printer/tvmscript_printer.cc

@@ -1069,7 +1069,7 @@ Doc TVMScriptPrinter::PrintLoop(const For& loop) {
     res << Print(loop->thread_binding.value()->thread_tag);
   }
   if (!loop->annotations.empty()) {
-    res << ", annotation = {";
+    res << ", annotations = {";
     res << PrintAnnotations(loop->annotations);
     res << "}";
   }

tests/python/unittest/test_tvmscript_roundtrip.py

@@ -2803,7 +2803,9 @@ def for_thread_binding(a: ty.handle, b: ty.handle) -> None:
     B = tir.match_buffer(b, (16, 16), "float32")
 
     for i in tir.thread_binding(0, 16, thread="threadIdx.x"):
-        for j in tir.thread_binding(0, 16, thread="threadIdx.y"):
+        for j in tir.thread_binding(
+            0, 16, thread="threadIdx.y", annotations={"attr_key": "attr_value"}
+        ):
             A[i, j] = B[i, j] + tir.float32(1)
 
 
@@ -2818,6 +2820,7 @@ def test_for_thread_binding():
     assert isinstance(rt_func.body.body, tir.stmt.For)
     assert rt_func.body.body.kind == 4
     assert rt_func.body.body.thread_binding.thread_tag == "threadIdx.y"
+    assert rt_func.body.body.annotations["attr_key"] == "attr_value"
 
 
 @tvm.script.tir