Update samples readme #6774

Job	Run time
cpp-beam_search_causal_lm-ubuntu (./build/samples/cpp/text_generation/beam_search_causal_lm)	20m 31s
cpp-beam_search_causal_lm-ubuntu (python ./samples/python/text_generation/beam_search_causal_lm.py)	20m 14s
cpp-greedy_causal_lm-windows	35m 49s
cpp-multinomial-greedy_causal_lm-ubuntu	18m 59s
cpp-beam_search_causal_lm-notus-7b-v1	15m 38s
cpp-beam_search_causal_lm-Phi-2	17m 2s
cpp-beam_search_causal_lm-Qwen1_5-7B-Chat	16m 16s
cpp-chat_sample-ubuntu	15m 13s
cpp-greedy_causal_lm-Qwen-7B-Chat	11m 32s
cpp-greedy_causal_lm-redpajama-3b-chat	11m 49s
cpp-prompt_lookup_decoding_lm-ubuntu	9m 16s
cpp-Phi-1_5	8m 20s
cpp-speculative_decoding_lm-ubuntu	12m 46s
visual_language_chat_sample-ubuntu-internvl2	24m 38s
visual_language_chat_sample-ubuntu-minicpm_v2_6	8m 18s
cpp-continuous-batching-macos	18m 52s
cpp-continuous-batching-ubuntu	16m 1s
cpp-continuous-batching-windows	25m 55s
visual_language_chat_sample-ubuntu-llava_1_5 / visual_language_chat_sample-ubuntu-llava	30m 36s
visual_language_chat_sample-ubuntu-llava_next / visual_language_chat_sample-ubuntu-llava	18m 39s
ci/gha_overall_status_causal_lm	1s
	5h 56m 25s

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