fix whitespace

Author: shaofeiqi

ggml/src/ggml-opencl/kernels/mul_mm_f16_f32_kq_kqv.cl

@@ -268,4 +268,4 @@ __kernel void mul_mm_f16_f32_kq(
    uint subMatrixCStartInElements = depth_B * N * M + row * M + col;
    mm_store_c_N(matrix_C, regC_1, regC_2, regC_3, regC_4,regC_5, regC_6, regC_7,regC_8, subMatrixCStartInElements, line_stride_matrix_C_in_bytes, (N-block_id_n*32));
 
-}
+}