Update README.md

Author: kylesong22

8.0/README.md

@@ -6,6 +6,7 @@ https://github.com/machbase/dbms-nfx/releases/tag/8.0.27
 |OS|Arch|Download|
 |--|--|--|
 |Linux|x64|[machbase-SDK-8.0.27.official-LINUX-X86-64-release.tgz](https://github.com/machbase/packages/releases/download/8.0.27/machbase-SDK-8.0.27.official-LINUX-X86-64-release.tgz)|
+|Linux|arm64|[machbase-SDK-8.0.27.official-LINUX-ARM_CORTEX_A53-64-release.tgz](https://github.com/machbase/packages/releases/download/8.0.27/machbase-SDK-8.0.27.official-LINUX-ARM_CORTEX_A53-64-release.tgz)|
 
 ## 8.0.26