Fix typo in README

[falegh]

Motivation

Fix typo in README: DeekSeek should be DeepSeek

Modifications

Fix the DeekSeek typo

Checklist

• Format your code according to the Code Formatting with Pre-Commit.
• Add unit tests as outlined in the Running Unit Tests.
• Update documentation / docstrings / example tutorials as needed, according to Writing Documentation.
• Provide throughput / latency benchmark results and accuracy evaluation results as needed, according to Benchmark and Profiling.