cosmetics

doc/rv64.txt

@@ -17,4 +17,4 @@ rv64_isel() could turn compare used only with jnz into b{lt,ge}[u].
 
 RISC-V spec: https://github.com/riscv/riscv-isa-manual/releases/latest/download/riscv-spec.pdf
 ASM manual: https://github.com/riscv-non-isa/riscv-asm-manual/blob/master/riscv-asm.md
-psABI: https://github.com/riscv-non-isa/riscv-elf-psabi-doc/blob/master/riscv-elf.adoc
+ABI: https://github.com/riscv-non-isa/riscv-elf-psabi-doc/blob/master/riscv-cc.adoc