Update memiavl/db.go

Signed-off-by: yihuang <huang@crypto.com>

memiavl/db.go

@@ -88,7 +88,7 @@ type Options struct {
 	ZeroCopy bool
 	// CacheSize defines the cache's max entry size for each memiavl store.
 	CacheSize int
-	// LoadForOverwrite if true rollbacks the state, specifically the Load method will
+	// LoadForOverwriting if true rollbacks the state, specifically the Load method will
 	// truncate the versions after the `TargetVersion`, the `TargetVersion` becomes the latest version.
 	// it do nothing if the target version is `0`.
 	LoadForOverwriting bool