REF: https://bugzilla.tianocore.org/show_bug.cgi?id=4053 Add Loongson and LOONGARCH to "words" section in cspell.base.yaml file to avoid spelling check error. Cc: Michael D Kinney <michael.d.kinney@intel.com> Cc: Liming Gao <gaoliming@byosoft.com.cn> Signed-off-by: Chao Li <lichao@loongson.cn> Reviewed-by: Michael D Kinney <michael.d.kinney@intel.com>