go/packages: fix issue number typo in TestIssue37629

I had written 37529 but the issue it was fixing was actually 37629.
Fix that in the test name and comments.

For golang/go#37629

Change-Id: Id3798423b9039e9a330d00c32f600181e254f757
Reviewed-on: https://go-review.googlesource.com/c/tools/+/579715
Reviewed-by: Sam Thanawalla <[email protected]>
LUCI-TryBot-Result: Go LUCI <[email protected]>

Author: matloob

go/packages/packages_test.go

@@ -2422,11 +2422,11 @@ func testForTestField(t *testing.T, exporter packagestest.Exporter) {
 	}
 }
 
-func TestIssue37529(t *testing.T) {
-	testAllOrModulesParallel(t, testIssue37529)
+func TestIssue37629(t *testing.T) {
+	testAllOrModulesParallel(t, testIssue37629)
 }
-func testIssue37529(t *testing.T, exporter packagestest.Exporter) {
-	// Tests #37529. When automatic vendoring is triggered, and we try to determine
+func testIssue37629(t *testing.T, exporter packagestest.Exporter) {
+	// Tests #37629. When automatic vendoring is triggered, and we try to determine
 	// the module root dir for a new overlay package, we previously would do a go list -m all,
 	// which is incompatible with automatic vendoring.