Add timer_enable_nvtx section in markdown

Signed-off-by：Tianxiang Wang<tianxiang.wang@metax-tech.com>, Contributed under MetaX Integrated Circuits (Shanghai) Co., Ltd.

Author: wangtianxiang

docs/advanced/input_files/input-main.md

@@ -22,6 +22,7 @@
     - [min\_dist\_coef](#min_dist_coef)
     - [device](#device)
     - [precision](#precision)
+    - [timer_enable_nvtx](#timer_enable_nvtx)
     - [nb2d](#nb2d)
   - [Input Files](#variables-related-to-input-files)
     - [stru\_file](#stru_file)