Fix "perplexity/llama-3.1-70b-instruct" entry in "model_prices_and_context_window.json"

[rsmissclicki]

litellm/model_prices_and_context_window.json

Lines 17132 to 17140 in bfaab8a

	"perplexity/llama-3.1-70b-instruct": {
	"input_cost_per_token": 1e-06,
	"litellm_provider": "perplexity",
	"max_input_tokens": 131072,
	"max_output_tokens": 131072,
	"max_tokens": 131072,
	"mode": "chat",
	"output_cost_per_token": 1e-06
	},

We also need to update model_prices_and_context_window_backup.json.