[RISCV][NFC] Fix ident in RISCVISelLowering.h.

[craig.topper]

LGTM

llvm/lib/Target/RISCV/RISCVISelLowering.h

enum NodeType : unsigned {
   FABS_VL,
   FSQRT_VL,
   FCOPYSIGN_VL, // Has a merge operand
   VFCVT_RTZ_X_F_VL,
   VFCVT_RTZ_XU_F_VL,
   VFCVT_X_F_VL,
   VFCVT_XU_F_VL,
   VFROUND_NOEXCEPT_VL,
-  VFCVT_RM_X_F_VL, // Has a rounding mode operand.
+  VFCVT_RM_X_F_VL,  // Has a rounding mode operand.
   VFCVT_RM_XU_F_VL, // Has a rounding mode operand.
   SINT_TO_FP_VL,
   UINT_TO_FP_VL,
-  VFCVT_RM_F_X_VL, // Has a rounding mode operand.
+  VFCVT_RM_F_X_VL,  // Has a rounding mode operand.
   VFCVT_RM_F_XU_VL, // Has a rounding mode operand.
   FP_ROUND_VL,
   FP_EXTEND_VL,
 
   // Vector FMA ops with a mask as a fourth operand and VL as a fifth operand.
   VFMADD_VL,
   VFNMADD_VL,
   VFMSUB_VL,