CHANGELOG-3.3: fix typo in Go version

Signed-off-by: Gyuho Lee <leegyuho@amazon.com>

CHANGELOG-3.3.md

@@ -19,7 +19,7 @@ See [code changes](https://github.com/etcd-io/etcd/compare/v3.3.11...v3.3.12) an
 
 ### Go
 
-- Compile with [*Go 1.10.7*](https://golang.org/doc/devel/release.html#go1.10).
+- Compile with [*Go 1.10.8*](https://golang.org/doc/devel/release.html#go1.10).
 
 
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