riscv64: Fix whitespace

Author: afonso360

cranelift/codegen/src/isa/riscv64/lower.isle

@@ -462,7 +462,7 @@
   (alu_rrr (AluOPRRR.Sll) x (value_regs_get y 0)))
 
 ;; With `Zba` we have a shift that zero extends the LHS argument.
-(rule 3 (lower (has_type $I64(ishl (uextend x @ (value_type $I32)) (maybe_uextend (imm12_from_value y)))))
+(rule 3 (lower (has_type $I64 (ishl (uextend x @ (value_type $I32)) (maybe_uextend (imm12_from_value y)))))
   (if-let $true (has_zba))
   (alu_rr_imm12 (AluOPRRI.SlliUw) x y))