winhttp/tests: Fix typos in ok() messages.

dlls/winhttp/tests/notification.c

@@ -944,7 +944,7 @@ static void _read_request_data(struct test_request *req, struct info *info, cons
     WaitForSingleObject( info->wait, INFINITE );
 
     len = strlen(expected_data);
-    ok(!memcmp(buffer, expected_data, len), "unexpeceted data\n");
+    ok(!memcmp(buffer, expected_data, len), "unexpected data\n");
 }
 
 static void test_persistent_connection(int port)

dlls/winhttp/tests/winhttp.c

@@ -568,7 +568,7 @@ static void test_WinHttpAddHeaders(void)
     SetLastError(0xdeadbeef);
     ret = WinHttpAddRequestHeaders(request, test_headers[0], -1L, WINHTTP_ADDREQ_FLAG_ADD);
     err = GetLastError();
-    ok(ret, "WinHttpAddRequestHeader failed to add new header, got %d with error %u.\n", ret, err);
+    ok(ret, "WinHttpAddRequestHeaders failed to add new header, got %d with error %u.\n", ret, err);
     ok(err == ERROR_SUCCESS || broken(err == 0xdeadbeef) /* < win7 */, "got %u\n", err);
 
     index = 0;