[skip ci] Link to Data Formats tech report from README.md

README.md

@@ -83,6 +83,7 @@ Get started with [simple kernels](https://docs.tenstorrent.com/tt-metalium/lates
 ## TT-Metalium Tech Reports
 - [Matrix Engine](./tech_reports/matrix_engine/matrix_engine.md) (updated Sept 6th)
 - [Tensor Layouts](./tech_reports/tensor_layouts/tensor_layouts.md) (updated Sept 6th)
+- [Data Formats](./tech_reports/data_formats/data_formats.md) (updated Sept 7th)
 - [Saturating DRAM Bandwidth](./tech_reports/Saturating_DRAM_bandwidth/Saturating_DRAM_bandwidth.md) (updated Sept 6th)
 - [Flash Attention on Wormhole](./tech_reports/FlashAttention/FlashAttention.md) (updated Sept 6th)
 - [CNNs on TT Architectures](./tech_reports/CNNs/ttcnn.md) (updated Sept 6th)