[doc] include trtllm convert manual (#2941)

docs/mkdocs.yml

@@ -156,6 +156,7 @@ nav:
  - Tutorials:
  - 'docs/serving/serving/docs/lmi/tutorials/seq_scheduler_tutorial.md'
  - 'docs/serving/serving/docs/lmi/tutorials/trtllm_aot_tutorial.md'
+ - 'docs/serving/serving/docs/lmi/tutorials/trtllm_manual_convert_tutorial.md'
  - Tuning guides:
  - 'docs/serving/serving/docs/lmi/tuning_guides/deepspeed_tuning_guide.md'
  - 'docs/serving/serving/docs/lmi/tuning_guides/lmi_dist_tuning_guide.md'