`module_text_llm`: Fix module config and update CoT prompt #1871

Job	Run time
find_images_to_build	9s
build_image (modules/modeling/module_modeling_llm)	2m 18s
build_image (modules/programming/module_example)	2m 42s
build_image (modules/programming/module_programming_apted)	2m 20s
build_image (modules/programming/module_programming_llm)	2m 19s
build_image (modules/programming/module_programming_themisml)	3m 10s
build_image (modules/programming/module_programming_winnowing)	2m 23s
build_image (modules/text/module_text_cofee)	2m 36s
build_image (modules/text/module_text_llm)	2m 10s
build_image (assessment_module_manager)	2m 9s
build_image (llm_core)	2m 11s
build_image (log_viewer)	1m 53s
build_image (playground)	3m 9s
	29m 29s

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