build.md

@@ -72,8 +72,8 @@ RV32Iは32bitアーキテクチャで，簡単な整数の加減算，論理演
 
 ```
 $ ~/opt/riscv/bin/riscv32-unknown-elf-gcc --version
-riscv32-unknown-elf-gcc (GCC) 9.2.0
-Copyright (C) 2019 Free Software Foundation, Inc.
+riscv32-unknown-elf-gcc (GCC) 10.2.0
+Copyright (C) 2020 Free Software Foundation, Inc.
 This is free software; see the source for copying conditions.  There is NO
 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 ```