[RISCV][ISel] Fix comment to match direction of predicate in code. NFC. (#68248)

The comment says something different than what is happening in the code.
This patch aligns the comment with the code.

Author: michaelmaitland

llvm/lib/Target/RISCV/RISCVISelLowering.cpp

@@ -2128,7 +2128,7 @@ static void translateSetCCForBranch(const SDLoc &DL, SDValue &LHS, SDValue &RHS,
       }
       break;
     case ISD::SETLT:
-      // Convert X < 1 to 0 <= X.
+      // Convert X < 1 to 0 >= X.
       if (C == 1) {
         RHS = LHS;
         LHS = DAG.getConstant(0, DL, RHS.getValueType());