404 not found of binutils

[dannyZhou]

CLFS-for-LoongArch/CLFS_For_LoongArch64-20220108.md

Line 235 in 8b76ff1

**Binutils:** ```https://github.com/loongarch/binutils-gdb.git 分支名“loongarch/upstream_v6_a1d65b3”```

[bu3w]

There are the same issues in the line about gcc and glibc.
https://github.com/sunhaiyong1978/CLFS-for-LoongArch/blob/main/CLFS_For_LoongArch64-20220108.md?plain=1#L262
https://github.com/sunhaiyong1978/CLFS-for-LoongArch/blob/main/CLFS_For_LoongArch64-20220108.md?plain=1#L268

There is no public repos which belong to the user loongarch.
But there is the repo under loongson. https://github.com/loongson

[sunhaiyong1978]

github上的binutils分支名经常变，后续文档正在尝试用binutils官方的下载地址。