all: fix unavailable url

RISC-V modified the address of github and the suffix of the file.

The previous link is no longer accessible. use latest link.

Change-Id: I5e33ea8447a59b8183658248df05c79ddd380cba
Reviewed-on: https://go-review.googlesource.com/c/go/+/497378
Auto-Submit: Ian Lance Taylor <[email protected]>
TryBot-Result: Gopher Robot <[email protected]>
Run-TryBot: shuang cui <[email protected]>
Reviewed-by: Bryan Mills <[email protected]>
Reviewed-by: Ian Lance Taylor <[email protected]>
Run-TryBot: Ian Lance Taylor <[email protected]>

Author: cuishuang

src/cmd/link/internal/riscv64/asm.go

@@ -119,7 +119,7 @@ func elfreloc1(ctxt *ld.Link, out *ld.OutBuf, ldr *loader.Loader, s loader.Sym,
 		// HI20 PC-relative relocation text symbol, which in turn points to the
 		// given symbol. For further details see the ELF specification for RISC-V:
 		//
-		//   https://github.com/riscv/riscv-elf-psabi-doc/blob/master/riscv-elf.md#pc-relative-symbol-addresses
+		//   https://github.com/riscv-non-isa/riscv-elf-psabi-doc/blob/master/riscv-elf.adoc#pc-relative-symbol-addresses
 		//
 		var hiRel, loRel elf.R_RISCV
 		switch r.Type {

src/debug/elf/elf.go

@@ -13,7 +13,7 @@
  * $FreeBSD: src/sys/sparc64/include/elf.h,v 1.12 2003/09/25 01:10:26 peter Exp $
  * "System V ABI" (http://www.sco.com/developers/gabi/latest/ch4.eheader.html)
  * "ELF for the ARM® 64-bit Architecture (AArch64)" (ARM IHI 0056B)
- * "RISC-V ELF psABI specification" (https://github.com/riscv/riscv-elf-psabi-doc/blob/master/riscv-elf.md)
+ * "RISC-V ELF psABI specification" (https://github.com/riscv/riscv-elf-psabi-doc/blob/master/riscv-elf.adoc)
  * llvm/BinaryFormat/ELF.h - ELF constants and structures
  *
  * Copyright (c) 1996-1998 John D. Polstra.  All rights reserved.