Update README.md

Author: huiyuxie

README.md

@@ -72,9 +72,9 @@ Our current focus is on the semidiscretization of PDEs. The table below shows th
 
 # GPU Kernels to be Implemented
 Kernels left to be implemented on `TreeMesh` with `DGSEM`:
-- 1D Kernels: 1) `calc_volume_integral!()` - `volume_integral::VolumeIntegralShockCapturingHG`
-- 2D Kernels: 1) `calc_volume_integral!()` - `volume_integral::VolumeIntegralShockCapturingHG`, 2) `calc_mortar_flux!()`
-- 3D Kernels: 1) `calc_volume_integral!()` - `volume_integral::VolumeIntegralShockCapturingHG`, 2) `calc_mortar_flux!()`
+- 1D Kernels: 1) `calc_volume_integral!` - `volume_integral::VolumeIntegralShockCapturingHG`
+- 2D Kernels: 1) `calc_volume_integral!` - `volume_integral::VolumeIntegralShockCapturingHG`, 2) `calc_mortar_flux!`
+- 3D Kernels: 1) `calc_volume_integral!` - `volume_integral::VolumeIntegralShockCapturingHG`, 2) `calc_mortar_flux!`
 
 # Show Your Support!
 We always welcome new people to join us, please feel free to contribute. Also, if you find this package interesting and inspiring, please give it a star. Thanks!