Update README.md

README.md

@@ -25,7 +25,7 @@ This is a trained **neutron reflectometry (NR)** model designed for use with the
 |----------------------|------------------------|--------------------|
 | Thicknesses            | `[1.0, 1500.0]`        | Å                 |
 | Roughnesses            | `[0.0, 60.0]`          | Å                 |
-| Nuclear SLDs          | `[-8.0, 16.0] × 10⁻⁶` | Å⁻²               |
+| Nuclear SLDs          | `[-8.0, 16.0]`        | 10⁻⁶ Å⁻²               |
 | Intensity scaling    | `[0.9, 1.1]`           | multiplicative factor |
 | Background (log₁₀)   | `[-10.0, -4.0]`        | dimensionless      |