correct typo

README.md

@@ -55,7 +55,7 @@ configs:
 `LOOPerSet` was originally created to train the cost model for the [LOOPer autoscheduler](https://ieeexplore.ieee.org/document/11282943) (PACT '25). For a full description of the generation process and a diversity analysis, please see our [companion paper on arXiv](https://arxiv.org/abs/2510.10209).
 
 ### What is inside?
-Each data point represents a **(Program, Schedule) $\rightarrow$ Performance** tuple containing:
+Each data point represents a **(Program, Schedule) → Performance** tuple containing:
 *   **Source Code & IR:** Raw Tiramisu (C++) generator code, lowered Halide IR, and ISL ASTs.
 *   **Structured Features:** JSON-based representation of the program structure (loop hierarchy, memory access patterns, arithmetic expressions) for feature engineering.
 *   **Optimization Schedules:** Sequences of code transformations (tiling, skewing, fusion, interchange, unrolling, parallelization, etc) and the specific API commands used to apply them.