Update vLLM commit for deepseek-distill-llama70b in README.md

[skhorasganiTT]

Ticket

N/A

Problem description

N/A

What's changed

• Update vLLM commit for deepseek-distill-llama70b in README.md

Checklist

• Post commit CI passes
• Blackhole Post commit (if applicable)
• Model regression CI testing passes (if applicable)
• Device performance regression CI testing passes (if applicable)
• (For models and ops writers) Full new models tests passes
• New/Existing tests provide coverage for changes