test: fix CI error caused by test_c.sh

tests/docs-examples-test/test_c.sh

@@ -11,14 +11,14 @@ cd ../../docs-examples/c
 gcc connect_example.c -o connect_example -ltaos
 ./connect_example
 
-gcc -o async_query_example async_query_example.c -ltaos
-./async_query_example
-
 # 2
 taos -s "drop database if exists power"
 gcc -o insert_example insert_example.c -ltaos
 ./insert_example
 
+gcc -o async_query_example async_query_example.c -ltaos
+./async_query_example
+
 # 3
 taos -s "drop database if exists power"
 gcc -o stmt_example stmt_example.c -ltaos